Del Mar Photonics

This page is created to review recent customer inquiry about applications of DPSS in Laser Shearography.

17th World Conference on Nondestructive Testing, 25-28 Oct 2008, Shanghai, China
 

Aerospace NDT with Advanced Laser Shearography
John W. NEWMAN
Laser Technology Inc.

Abstract:
Shearography nondestructive testing has evolved considerably since first used on a
production aircraft program in the USA in 1986. Shearography laser interferometric imaging
methods measure test structure deformation due to an applied engineered change in stress. The
resulting changes in Z-Axis strain component reveal images of subsurface defects such as
disbonds, delaminations, core defects and impact damage in aerospace structures. Shearography
NDT provides high thru-put, cost-effective productivity enhancements, improved manufacturing
processes and quality. Development of digital CCD cameras, the PC and small, high power
solid-state lasers have led to dramatic performance improvements in shearography instruments
and systems. Shearography is currently in use on a wide variety of aircraft including F-22, F-35
JSF, Airbus, Cessna Citation X, Raytheon Premier I and the NASA Space Shuttle. This
presentation will provide a brief background on shearography NDT technology as well as recent
developments in production and portable on-aircraft shearography inspection technologies and
applications.
Key Words: Aerospace NDT, shearography NDT, honeycomb structure, NDT, disbond,
damage, delamination
1.0 Background
In today’s highly competitive aerospace environment, a capable high-speed inspection
technology is critical. Shearography nondestructive testing is providing a better and faster means
to nondestructively inspecting new aircraft both during manufacturing and in the field.
In the quest to maximize fuel economy and performance, engineers have turned from riveted
and bonded aluminum structures to solid composite laminates, composite sandwich panels with
honeycomb or foam cores and tape wound composite structures such as fuselages. The
traditional methods for nondestructive testing, such as ultrasonic (UT) C-Scan, may not provide
the best defect detection capability for these new materials and geometries and are slow with a
typical through-put of just 10 sq. ft./hour. Further, the process of manufacturing complex
composite structures requires a means for fast inspection to provide a process control feedback
and to ensure quality and reliability at the lowest possible cost. In many aerospace programs
today, laser shearography is providing a large part of the solution.

2
2.0 History of Shearography NDT
The electronic laser shearography imaging interferometer was pioneered in the early 1980’s
by three researchers, Dr. John Butters at Loughborough University in the UK, Dr. S. Nakadate in
Japan and Dr. Mike Hung at Oakland University in the USA. The author’s team at Laser
Technology Inc. led the development of the shearography camera as a tool for nondestructive
testing, delivering the world’s first production shearography NDT system to Northrop Grumman
in 1987 for the manufacturing of the USAF B2 Stealth Bomber.
In the last twenty years more than 1,200 shearography systems have been integrated into the
manufacturing process for aircraft composites, tires and high-reliability electronics. As with all
NDT methods and technologies, shearography’s strengths and weakness must be completely
understood, and applications qualified through Probability of detection (PoD) verification with
written procedures and rigorous training for operators and engineers alike. Once qualified,
however, shearography systems can operate with extraordinary efficiency reaching through-puts
from 25 to 1200 sq. ft per hour, 2.5 to 120 times the typical 10 sq. ft./hour inspection rate for
ultrasonic C-Scan.
Photo 2
This executive jet flap is
manufactured with GRP skins and
multiple foam cores with internal
bond lines making this part
extremely difficult to inspect using
traditional NDT technologies.
Photo 1
The USAF B-2 stealth
bomber was the first
aircraft to incorporate
Shearography NDT
technology in the
manufacturing of
complex composite
structures.

3. Shearography NDT
Unlike UT C-Scan, which uses a single transducer that requires a raster scan over the part to
build up an image, Shearography is a whole field, real-time imaging technique that reveals outof-
plane deformation derivatives in response to and applied stress. Using a slight pressure
reduction in a shearography test chamber, critical defects are imaged and measured in seconds.
The shearography camera detects surface bumps as small as 3 nanometers caused by local strain
changes around subsurface defects as the pressure is reduced on the part. Vacuum shearography
is highly effective for image disbonds, delaminations, core damage and core splice-joint
separations. Other Shearography NDT techniques that are frequently used include thermal pulse
shearography for non-visible impact damage, pressure shearography for damage to composite
wrapped pressure vessels. Vibration shearography has been highly developed in the last several
years by the author to inspect the foam on the external tank of NASA’s Space Shuttle.
o
Photo 3
Shearography images above show disbonds in the flap, between the foam core and
GRP skins, on the left as the white/black indications in the unwrapped image or, on
the right, as areas with fringe concentrations in the wrapped phase map. Time to
perform a shearography test of this 1.5 sq. ft. section of the flap is 4 seconds, 135
times faster than testing with UT C-Scan, if the test could be accomplished at all
given the complex shape.
Photo 4
A typical digital shearography camera,
the LTI-5100, includes a built in laser, the
shearing image interferometer and image
processing computer. The aircraft radome
may be tested with thermal stressed by
applying a slight temperature change on the
order of 3-10°C.

(pdf)

DPSS lasers for Aerospace NDT with Advanced Laser Shearography

Del Mar Photonics

DPSS 532 nm 1W laser DMPV-532-1 (532nm Diode Pumped Solid State Green Laser 1000mW)

DPSS 532 nm 3W laser DMPV-532-3 (532nm Diode Pumped Solid State Green Laser 3000mW)

Infrared viewers - Accessories

Available models

IR viewer Abris-M 1300 version 1
IR viewer Abris-M 1700 version 1
IR viewer Abris-M 2000 version 1
IR viewer Abris-M 1300 version 2
IR viewer Abris-M 1700 version 2
IR viewer Abris-M 2000 version 2
Camera adapter
Microscope adapter
Video adapter VA-1

E-mail us to request a quote

Infrared Viewers/ Ultraviolet Viewers

High performance infrared monocular viewers are designed to observe radiation emitted by infrared sources. They can be used to observe indirect radiation of IR LED's and diode lasers, Nd:YAG, Ti:Sapphire, Cr:Forsterite, dye lasers and other laser sources. IR viewers are ideal for applications involving the alignment of infrared laser beams and of optical components in near-infrared systems. The light weight, compact monocular may be used as a hand-held or facemask mounted for hands free operation. Ultraviolet viewers are designed to observe radiation emitted by UV sources.

Applications: Laser alignment and safety Lasers, which can be observed with IR-viewers: GaAs laser diodes @800 - 950nm, GaAlAs @1350nm, Nd:YAG @ 1064nm, Ti:Sapphire @ 690 - 1000nm, Li:F2 @1090 - 1270nm, Cr: Forsterite @ 1150 - 1350nm etc. Near IR viewers are extremely important for locating stray beam reflections that may cause eye damage or injury. related products: femtoseconds Ti:Sapphire laser kit> Nd:YAG laser frequency converters> femtosecond Cr:Forsterite laser> IR optics> Semiconductor inspection New Application! From Optics.Org: Infrared light probes varicose veins. An infrared digital imaging system will be used to compare three varicose vein treatments.   New Application! From Optics.Org: Infrared light detects tooth decay. A dentist’s toolkit for detecting tooth decay could soon include an infrared-imaging system. Shining infrared light with a wavelength of 1310 nm through a tooth is an effective way to spot early decay, according to a team from the University of California at San Francisco, US.   Thermal imaging The IR-viewers can be used to image the thermal radiation of objects above 600°C (such as kilns, furnaces or solder pots). Objects in this temperature range (and hotter) emit enough infrared radiation in the 0.8-1.5 micron wavelength range to be imaged. Night vision Invisible near-infrared illuminator is used as a light source for night vision applications. Forensics and Art Restoration Professional Dark Rooms Photo-processing Near-infrared viewing devices have become invaluable tools for assuring error-free processing of color sensitive materials in the photography

Typical Spectral Response (sensitivity versus wavelength)

Minimum power densities required to view an infrared laser beam from a distance of one meter: -20mW/cm2 for 1.06mm -500mW/cm2 for 1.3mm Standard IR viewers have spectral response up to 1300nm. IR viewers with extended spectral range are available: models 1700 (with sensitivity up to 1700nm) and model 2000 (with sensitivity up to 2000nm).

Specifications

Infrared Viewers SM-3R 2000 (SM-3R 1700)
 

IR viewers SM-3R 2000 (1700) have extended spectral response up to 2000nm (1700nm). Minimum power densities required to view an infrared laser beam from a distance of one meter using infrared viewer SM-3R 2000 are approximately as follows: 10 mW/cm2 for a 1.6 mm 50 mW/cm2 for a 1.7 mm 200 mW/cm2 for a 1.8 mm 2 - 5 W/cm2 for a 2.0 mm

Typical spectral curve of the SM-3R2000 in the near - infrared range

FemtoViewer is a high performance near IR viewer optimized for applications involving the alignment of near-infrared Ti:Sapphire laser beams.

Titanium-doped sapphire (Ti:Sapphire) has become by far the most common laser material for the generation of ultrashort pulses. The wavelengths in which Ti:Sapphire crystal will produce gain stretch from 660nm to 1180 nm. A bandwidth of over 400 nm in the near IR region makes Ti:Sapphire a very attractive material for use in tunable laser sources and generation of very short pulses with a broad tuning range.

FemtoViewer is intended for alignment of both CW and femtosecond Ti:Sapphire lasers.   Write us about your femtosecond project and enter a chance to win FemtoViewer When writing to us please enter "Win FemtoViewer" in the subject line. Please answer the following questions: what is your femtosecond project about? Do you have femtosecond system now? If yes, please describe briefly, what you have and how you plan to improve it in the next 6-12 months. Do you plan to purchase femtosecond products in the next 6 months? Yes-no If yes, please describe briefly your requirements.

Trestles LH femtosecond Ti:Sapphire lasers with integrated DPSS DMPLH laser pump

DPSS DMPLH lasers

DPSS DMP LH series lasers will pump your Ti:Sapphire laser - request a quote

Del Mar Photonics offers High Power CW 532 nm DPSS DMP LH series Lasers suitable for Ti:Sapphire laser pumping

Features • Compact laser head with sealed  enclosure for long lifetime • Long lifetime diode pack fiber-coupled to laser head • Excellent long-term power stability <0.5% rms over 24 hours • Closed-loop, purpose-built TEC chiller integrated in power supply  (no need to buy a separate chiller to cool Ti:Sapphire crystal!) • 5, 6, 8 and 10 W versions

DPSS DMP LH series is a compact, diode-pumped solid-state (DPSS) laser providing high-power, continuous-wave (CW) power at 532nm in a near- perfect TEMoo mode with extremely low optical noise and excellent long-term stability. DPSS DMP LH series is truly a next-generation laser designed and manufactured using many years of experience to provide a sealed, turn-key source of collimated green light with high spectral purity.

A number of key technologies guarantee this performance. Sealed technology keeps all dirt, dust and moisture out of the laser head to provide years of uninterrupted usage without need for cleaning or maintenance. All cavity optics is permanently locked in perfect alignment.

The laser head is a monolithic 3-dimensional design for ruggedness and compactness to minimize the space consumed in your lab or instrument. The fiber-coupled pump diode package, contained in the power supply, has an expected lifetime of more than 20,000 hours to minimize cost-of-ownership. The power supply also contains an integrated thermo-electrically-cooled (TEC) chiller. The chiller is designed specifically for this application to provide increased reliability and reduced overall system footprint. Additional features include automatic laser power control and USB/RS-232 interface for external monitoring and control.

DPSS DMP LH series is a state-of-the-art laser designed for today’s applications.
It combines superb performance and tremendous value for today’s market.

Notes:
1. All performance specifications are guaranteed at specified power
2. Output power at 532 nm compared to output power at 1064 nm
3. 1/e², measured at the output port of the laser head
4. Full angle (1/e²), measured at the output port of the laser head
5. Measured at far-field x and y positions after a 30 minute warm-up and over a 20°C to 30°C temperature range
6. Measured over a 24 hour period after a 15 minute warm-up
7. Measured from 10 Hz to 10 MHz
8. Specifications subject to change without notice.

Trestles LH femtosecond lasers with integrated DPSS DMPLH laser pump

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics
Tresltes LH10-fs/CW laser at Harvard University is used for STED microscopy of nanodiamons

Trestles LH Ti:Sapphire laser Trestles LH is a new series of high quality femtosecond Ti:Sapphire lasers for applications in scientific research, biological imaging, life sciences and precision material processing. Trestles LH includes integrated sealed, turn-key, cost-effective, diode-pumped solid-state (DPSS). Trestles LH lasers offer the most attractive pricing on the market combined with excellent performance and reliability. DPSS LH is a state-of-the-art laser designed for today’s applications. It combines superb performance and tremendous value for today’s market and has numerous advantages over all other DPSS lasers suitable for Ti:Sapphire pumping. Trestles LH can be customized to fit customer requirements and budget. Reserve a spot in our Femtosecond lasers training workshop in San Diego, California.

New laser spectrometer T&D-scan for research  that demands high resolution and high spectral density in UV-VIS-NIR spectral domains - now available with new pump option! The T&D-scan includes a CW ultra-wide-tunable narrow-line laser, high-precision wavelength meter, an electronic control unit driven through USB interface as well as a software package. Novel advanced design of the fundamental laser component implements efficient intra-cavity frequency doubling as well as provides a state-of-the-art combined ultra-wide-tunable Ti:Sapphire & Dye laser capable of covering together a super-broad spectral range between 275 and 1100 nm. Wavelength selection components as well as the position of the non-linear crystal are precisely tuned by a closed-loop control system, which incorporates highly accurate wavelength meter. Reserve a spot in our CW lasers training workshop in San Diego, California.

HPG5000 is suitable for pumping Ti:Sapphire lasers

Del Mar Photonics offer variety of green lasers for wide range of applications. When you ask for a quote, please indicate your requirements and/or application, as the cost of DPSS lasers of the same output power depends on the power stability and noise.

We can offer green lasers with different specifications.
For example we have top of the line laser for Ti:Sapphire pumping at the best prices:
http://www.dmphotonics.com/DPSS-DMP-LH/DPSS-DMPLH.htm
This model already include a water chiller that can be used also to cool Ti:Sapphire crystals

If you want to pay less we can offer another model
http://www.dmphotonics.com/DPSS-lasers/high-power-green-DPSS-lasers.htm
You will need additional chiller to cool the Ti:Sa crystal

For applications other than Ti:Sapphire pumping we can offer many other DPPS lasers:
http://www.dmphotonics.com/DPSS_DMPV532/DPSS%20DMPV-532-1.htm

and many others.

So please let us know required specifications or choose the model you want us to quote.

DPSS 532 nm 8W laser DMPV-532-8a (532nm Diode Pumped Solid State Green Laser 8000mW)

Model: DPSS DMPV-532-8a (532nm-Green Laser-8W) - request a quote



Specifications:

DPSS 532 nm 1W laser DMPV-532-1 (532nm Diode Pumped Solid State Green Laser 1000mW)

DPSS 532 nm 3W laser DMPV-532-3 (532nm Diode Pumped Solid State Green Laser 3000mW)

DPSS 532 nm 8W laser DMPV-532-8s (532nm Diode Pumped Solid State Green Laser 8000mW)

Red Green Blue DPSS lasers
Diode end-pump green lasers (532nm) and infrared lasers (1064nm)
Crystals and optics for DPSS laser manufacturing
DPSS laser kits

DPSS DMPE-532 green lasers

High quality green laser for pumping Ti:Sapphire lasers DPSS DMPLH

	DPSS DMPLH lasers DPSS DMP LH series lasers will pump your Ti:Sapphire laser. There are LH series lasers installed all over the world pumping all makes & models of oscillator. Anywhere from CEP-stabilized femtosecond Ti:Sapphire oscillators to ultra-narrow-linewidth CW Ti:Sapphire oscillators. With up to 10 Watts CW average power at 532nm in a TEMoo spatial mode, LH series lasers has quickly proven itself as the perfect DPSS pump laser for all types of Ti:Sapphire or dye laser. Ideal for pumping of: Trestles LH Ti:Sapphire laser T&D-scan laser spectrometer based on narrow line CW Ti:Sapphire laser
	Trestles LH Ti:Sapphire laser Trestles LH is a new series of high quality femtosecond Ti:Sapphire lasers for applications in scientific research, biological imaging, life sciences and precision material processing. Trestles LH includes integrated sealed, turn-key, cost-effective, diode-pumped solid-state (DPSS). Trestles LH lasers offer the most attractive pricing on the market combined with excellent performance and reliability. DPSS LH is a state-of-the-art laser designed for today’s applications. It combines superb performance and tremendous value for today’s market and has numerous advantages over all other DPSS lasers suitable for Ti:Sapphire pumping. Trestles LH can be customized to fit customer requirements and budget. Reserve a spot in our Femtosecond lasers training workshop in San Diego, California. Come to learn how to build a femtosecond laser from a kit
	New laser spectrometer T&D-scan for research  that demands high resolution and high spectral density in UV-VIS-NIR spectral domains - now available with new pump option! The T&D-scan includes a CW ultra-wide-tunable narrow-line laser, high-precision wavelength meter, an electronic control unit driven through USB interface as well as a software package. Novel advanced design of the fundamental laser component implements efficient intra-cavity frequency doubling as well as provides a state-of-the-art combined ultra-wide-tunable Ti:Sapphire & Dye laser capable of covering together a super-broad spectral range between 275 and 1100 nm. Wavelength selection components as well as the position of the non-linear crystal are precisely tuned by a closed-loop control system, which incorporates highly accurate wavelength meter. Reserve a spot in our CW lasers training workshop in San Diego, California. Come to learn how to build a CW Ti:Sapphire laser from a kit

Femtosecond Ti:Sapphire oscillators and amplifiers from Del Mar Photonics

Do you plan to build a femtosecond set up based on Ti:Sapphire laser?

We offer several oscillator and amplifier options:

Femtosecond Ti:Sapphire Oscillator

1. If you already have a CW pump laser or plan to buy specific model and need only Ti:Sapphire oscillator we can offer our stand alone Ti:Sapphire lasers Trestles models, that do not include pump laser and can be customized for any suitable CW pump.

Please indicate required pulse duration (standard models have 20 fs, 50 fs and 100 fs pulses) and tuning range. Let us know what kind of pump laser you have (make/model) so we can confirm what output parameters can be achieved.

2. If you do not have a pump laser and want to buy complete system we can offer you one of the following:
One-box system Trestles Finesse that include Trestles mini Ti:Sapphire oscillator and built in DPSS pump laser

When choosing specific Trestles Finesse model please indicate required CW pump power (4W or 6W), Ti:Sapphire pulse duration and required tuning range (or tuning range, where you want to achieve maximum performance)

Tuning range can be customized at the factory by choosing one of standard or custom made optics set. Typical tuning curves for 4W CW pump laser for two standard optics sets are shown in the Trestles Finesse brochure. For example, with 4W CW pump laser and long-wave mirrors set tuning range can be extended up to 940nm. With 6W CW pump laser tuning range can be extended up to 980nm.

Femtosecond Ti:Sapphire Amplifier


1. We offer integrated oscillator/amplifier system Teahupoo Rider. Teahupoo Rider is a fully-integrated all-in-one-box system that includes Trestles Finesse oscillator or Buccaneer SHG diode-pumped fiber oscillator, pulse stretcher, regenerative amplifier pumped by multi kHz Nd:YAG pump laser and pulse compressor. Teahupoo Rider has a factory preinstalled repetition rate of 2, 5 or 10kHz and ideal for low cost femtosecond micromachining systems, OPA pumping, ultrafast spectroscopy and variety of applications in life sciences.

2. If you already have a Ti:Sapphire oscillator, we can offer you stand alone Ti:Sapphire amplifier. Two standard models are available: Wedge M multipass or Wedge R regenerative.

Each amplifier is customized to the customer's amplifier pump laser.

2. Custom Teahupoo Rider systems with a pump laser of your choice are also available. Depending on the required specifications we can recommend a pump laser and make required adjustments for optimum performance.
The following specifications can be achieved:
Repetition rate: single pulses, 10 Hz up to 10kHz
Pulse duration: 100fs, 50fs, 30fs, <30fs
Pulse energy: from 100 mJ per pulse to few mJ per pulse
Tunability: both fixed wavelength and tunable options are available - please indicate required tuning range.

Del Mar Photonics

Product news and updates - Training Workshops - Featured Customer - Other News

	AOTF Infrared Spectrometer Del Mar Photonics offer a handheld infrared spectrometer based on the acousto-optic tunable filter (AOTF). This instrument is about the size and weight of a video camera, and can be battery operated. This unique, patented device is all solid-state with no moving parts. It has been sold for a wide variety of applications such as liquid fuel analysis, pharmaceutical analysis, gas monitoring and plastic analysis. Miniature AOTF infrared spectrometer uses a crystal of tellurium dioxide to scan the wavelength. Light from a light source enters the crystal, and is diffracted into specific wavelengths. These wavelengths are determined by the frequency of the electrical input to the crystal. Since there are no moving parts, the wavelength scanning can be extremely fast. In addition, specific wavelengths can be chosen by software according to the required algorithm, and therefore can be modified without changing the hardware. After the infrared radiation reflects off of the sample, it is converted into an electrical signal by the detector and analyzed by the computer. Del Mar Photonics is looking for international distributors for RAVEN - AOTF IR spectrometer for plastic identification and for variety of scientific and industrial collaborations to explore futher commercial potential of AOTF technology. New: AOTF spectrometer to measure lactose, fat and proteins in milk
	Open Microchannel Plate Detector MCP-MA25/2 - now in stock! Microchannel Plate Detectors MCP-MA series are an open MCP detectors with one or more microchannel plates and a single metal anode. They are intended for time-resolved detection and make use of high-speed response properties of the MCPs. MCP-MA detectors are designed for photons and particles detection in vacuum chambers or in the space. MCP-MA detectors are used in a variety of applications including UV, VUV and EUV spectroscopy, atomic and molecular physics, TOF mass–spectrometry of clusters and biomolecules, surface studies and space research. MCP-MA detectors supplied as a totally assembled unit that can be easily mounted on any support substrate or directly on a vacuum flange. They also can be supplied premounted on a standard ConFlat flanges. buy online - ask for research discount!
	Hummingbird EMCCD camera The digital Hummingbird EMCCD camera combines high sensitivity, speed and high resolution. It uses Texas Instruments' 1MegaPixel Frame Transfer Impactron device which provides QE up to 65%. Hummingbird comes with a standard CameraLink output. It is the smallest and most rugged 1MP EMCCD camera in the world. It is ideally suited for any low imaging application such as hyperspectral imaging, X-ray imaging, Astronomy and low light surveillance. It is small, lightweight, low power and is therefore the ideal camera for OEM and integrators. buy online
	Hatteras-D femtosecond  transient absorption data acquisition system Future nanostructures and biological nanosystems will take advantage not only of the small dimensions of the objects but of the specific way of interaction between nano-objects. The interactions of building blocks within these nanosystems will be studied and optimized on the femtosecond time scale - says Sergey Egorov, President and CEO of Del Mar Photonics, Inc. Thus we put a lot of our efforts and resources into the development of new Ultrafast Dynamics Tools such as our Femtosecond Transient Absorption Measurements system Hatteras. Whether you want to create a new photovoltaic system that will efficiently convert photon energy in charge separation, or build a molecular complex that will dump photon energy into local heat to kill cancer cells, or create a new fluorescent probe for FRET microscopy, understanding of internal dynamics on femtosecond time scale is utterly important and requires advanced measurement techniques. Reserve a spot in our Ultrafast Dynamics Tools training workshop in San Diego, California.
	Beacon Femtosecond Optically Gated Fluorescence Kinetic Measurement System - request a quote  - pdf Beacon together with Trestles Ti:sapphire oscillator, second and third harmonic generators. Femtosecond optical gating (FOG) method gives best temporal resolution in light-induced fluorescence lifetime measurements. The resolution is determined by a temporal width of femtosecond optical gate pulse and doesn't depend on the detector response function. Sum frequency generation (also called upconversion) in nonlinear optical crystal is used as a gating method in the Beacon femtosecond fluorescence kinetic measurement system. We offer Beacon-DX for operation together with Ti: sapphire femtosecond oscillators and Beacon-DA for operation together with femtosecond amplified pulses. Reserve a spot in our Ultrafast Dynamics Tools training workshop in San Diego, California.
	Terahertz systems, set ups and components New band pass and long pass THz optical filters based on porous silicon and metal mesh technologies. Band pass filters with center wavelengths from 30 THz into GHz range and transmissions up to 80% or better. Standard designs with clear aperture diameters from 12.5 to 37.5 mm. Long pass filters with standard rejection edge wavelengths from 60 THz into GHz range. Maximum transmission up to 80% or better, standard designs at 19.0 and 25.4 mm diameters. Excellent thermal (from cryogenic to 600 K) and mechanical properties THz products: THz Spectrometer kit with Antenna THz transmission setup THz time domain spectrometer Pacifica fs1060pca THz time domain spectrometer Pacifica fs780pca THz detectors: Golay cell and LiTaO3 piroelectric detectors PCA - Photoconductive Antenna as THz photomixer Pacifica THz Time Domain Spectrometer - Trestles Pacifica Holographic Fourier Transform Spectrometer for THz Region Wedge TiSapphire Multipass Amplifier System - THz pulses generation Terahertz Spectroscopic Radar Mobile System for Detection of Concealed Explosives Band pass filters with center wavelengths from 30 THz into GHz range Long pass filters with standard rejection edge wavelengths from 60 THz into GHz range Generation of THz radiation using lithium niobate Terahertz crystals (THz): ZnTe, GaP, LiNbO3 - Wedge ZnTe
	iPCA - interdigital Photoconductive Antenna for terahertz waves Large area broadband antenna with lens array and high emitter conversion efficiency iPCA with LT-GaAs absorber, microlens array for laser excitation wavelengths l £  850 nm, adjusted hyperhemispherical silicon lens with a high power conversion efficiency of 0.2 mW THz power / W optical power. The iPCA can be used also as large area THz detector. The two types iPCAp and iPCAs have the same active interdigital antenna area but different contact pad directions with respect to the electrical THz field. Interdigital Photoconductive Antenna for terahertz waves generation using femtosecond Ti:Sapphire laser THz books
	IntraStage lowers the cost of test data management! Struggling with gigabytes or terabytes of test data? IntraStage easily transforms test data from disparate sources into web-based quality metrics and engineering intelligence you can use. Contact us today to discuss your test management requirements and specifications of your application.

Training Workshops

Come to San Diego next summer! Attend one of our training workshops in San Diego, California during summer 2011 Del Mar Photonics has presented training workshops for customers and potential customers in the past 3 years. Our workshops cover scientific basics, technical details and provide generous time for hands-on training. Each workshop is a three-day seminar conducted by professional lecturer from 10am to 4pm. It includes lunch, as well as a training materials. We have also reserved two days for Q&A sessions, one-on-one system integration discussions, social networking, and San Diego sightseeing. The following training workshops will be offered during this summer: 1. Femtosecond lasers and their applications 2. CW narrow line-width widely tunable lasers and their applications 3. Adaptive optics and wavefront sensors 4. Ultrafast (femtosecond) dynamics tools

Featured Customer

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics Del Mar Photonics offers new Trestles fs/CW laser system which can be easily switched from femtosecond mode to CW and back. Having both modes of operation in one system dramatically increase a number of applications that the laser can be used for, and makes it an ideal tool for scientific lab involved in multiple research projects. Kaelyn Leake is a PhD student in Electrical Engineering. She graduated from Sweet Briar College with a B.S. in Engineering Sciences and Physics. Her research interests include development of nanoscale optofluidic devices and their applications. Kaelyn is the recipient of a first-year QB3 Fellowship. In this video Kaelyn talks about her experimental research in nanoscale optofluidics to be done with Trestles LH laser. Reserve a spot in our femtosecond Ti:Sapphire training workshop in San Diego, California during summer 2011

Frequency-stabilized CW single-frequency ring Dye laser DYE-SF-007 pumped by DPSS DMPLH laser installed in the brand new group of Dr. Dajun Wang at the The Chinese University of Hong Kong. DYE-SF-077 features exceptionally narrow generation line width, which amounts to less than 100 kHz. DYE-SF-077 sets new standard for generation line width of commercial lasers. Prior to this model, the narrowest line-width of commercial dye lasers was as broad as 500 kHz - 1 MHz. It is necessary to note that the 100-kHz line-width is achieved in DYE-SF-077 without the use of an acousto-optical modulator, which, as a rule, complicates the design and introduces additional losses. A specially designed ultra-fast PZT is used for efficient suppression of radiation frequency fluctuations in a broad frequency range. DYE-SF-077 will be used in resaerch of Ultracold polar molecules, Bose-Einstein condensate and quantum degenerate Fermi gas and High resolution spectroscopy

Other News

Optical Society of Southern California meeting at UCSD OSSC 2011-04-27
Nd:YAG laser ordered by the University of Leon, UANL, Mexico
Wedge 50 Multipass Amplifier pumped with a Darwin-527-30-M DPSS Laser ordered by Hong Kong customer
New Trestles LH10-fs/CW femtosecond+CW laser ready for delivery to the University of California Santa Cruz
Trestles femtosecond Ti:Sapphire laser delivered to North Carolina State University
Del Mar Photonics sponsor IONS (International OSA Network of Students) conference IONS-NA-2 in Tucson, Arizona IONS-NA-2 website
Best talk and best poster awards at IONS-Moscow 2010 conference sponsored by Del Mar Photonics
Watch Del Mar Photonics videos!
Del Mar Photonics is now on Twitter!

Del Mar Photonics featured components

Del Mar Photonics continuously expands its components portfolio.

Solar Prisms for Concentrating Photovoltaic Systems (CPV) Solar cells made of compound semiconductors such as gallium arsenide are very expensive. Usually very small cells are installed and various means such as mirrors, lenses, prisms, etc..are used  to concentrate sunlight on the cells. Concentration photovoltaic technology (CPV) uses the solar radiation with an efficiency of 40%, double that of conventional solar cells Del Mar Photonics design custom Concentrating Photovoltaic Systems (CPV) and supply variety of the optical components for CPV such as solar prisms shown in the picture.   hexagonal light pipes, optical rods

Axicon Lens Axicon lens also known as conical lens or rotationally symmetric prism is widely used in different scientific research and application. Axicon can be used to convert a parallel laser beam into a ring, to create a non diffractive Bessel beam or to focus a parallel beam into long focus depth. Del Mar Photonics supplies axicons with cone angles range from 130° to 179.5° for use with virtually any laser radiation. We manufacture and supply axicons made from BK7 glass, fused silica and other materials. download brochure - request a quote

	Rutile (TiO2) coupling prisms Del Mar Photonics offers optical elements made of high quality synthetically grown Rutile Titanium Dioxide crystals. Rutile’s strong birefringency, wide transmission range and good mechanical properties make it suitable for fabrication of polarizing cubes, prisms and optical isolators. Boules having high optical transmission and homogeneity are grown by proprietary method. Typical boules have 10 - 15 mm in dia. and up to 25 mm length. Optical elements sizes - from 2 x 2 x 1 mm to 12.7 x 12.7 x 12.7 mm. Laser grade polish quality is available for finished elements. So far we the largest elements that we manufactured are 12 x15 x 5 mm, in which optical axis is parallel to 15 mm edge, 5 mm is along beam path, 12 x 15 mm faces polished 20/10 S/D, one wave flatness, parallelism < 3 arc.min. (better specs. available on request). more details - download brochure - request a quote
	Vacuum viewport Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance. Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex. Standard Viewing diameters from .55" to 1.94 ". Coating - a range of custom coatings can applied - which include - Single QWOT - Broad Band AR - V coatings - ITO - DLC (Diamond like coating) more details - request a quote
	Hydrogen Thyratrons are used in such devices as radars with different power levels, high-power pulsed technical, electrophysical, medical devices and lasers. Sophisticated design and high quality ceramic-metal envelope determines long lifetime and very accurate and reliable operation of hydrogen thyratrons under wide range of environmental conditions. Applications: - radars - pulsed  lasers power supplies - medical apparatus - electrophysical instrumentation Triggered Three-Electrode Spark Gap Switches are ceramic-metal sealed off gas discharge trigatron-type devices with a co-axial trigger electrode. These Gas Discharge Tubes contain no mercury and, due to an advanced design, feature high reliability and a long lifetime being operating under wide range of environmental conditions. Applications: - pulsed installation for processing materials - installations with plasma focus - pulse power supplies for lasers and other pulse equipment - medical apparatus such as lithotriptors and defibrillators - processing systems for petroleum wells

We are looking forward to hear from you and help you with your optical and crystal components requirements. Need time to think about it? Drop us a line and we'll send you beautiful Del Mar Photonics mug (or two) so you can have a tea party with your colleagues and discuss your potential needs.

Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics
sales@dmphotonics.com