Installation of the Trestles LH laser at the University of California Santa Cruz


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.

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics

  Nanoscale Optofluidics.htm

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.

Kaelyn is a member of Applied Optics Group headed by Prof. Holger Schmidt. Prof. Schmidt has authored or coauthored over 130 publications and several book chapters in various field of optics. He is co-editor of the CRC Press' Handbook of Optofluidics. Dr. Schmidt is a member of the Optical Society of America and the American Physical Society. He is a member of the California Institiute for Quantitative Biomedical Research (QB3), the Center for Biomolecular Science and Engineering (CBSE), and the Storage Systems Research Center (SSRC). He directs the W.M. Keck Center for Nanoscale Optofluidics at UC Santa Cruz .

Prof. Holger Schmid research interests are:
- Single particle optics
- Integrated optofluidics
- Integrated optics for biomedical applications
- Nano-magneto-optics, nano-magnetism
- Time-resolved spectroscopy of molecules, semiconductors and nanostructures
- Quantum interference, electromagnetically induced transparency (EIT)
- Nonlinear optics
- Quantum optics
- All-optical semiconductor devices


Trestles LH10-fs/CW laser system Request a quote
Ti:Sapphire femtosecond oscillator with CW operation option
Spatial mode: TEMoo;
Polarization: linear horizontal;
fs mode:
Tuning range (@10W pump): 750-850 nm;
Output power (@10W pump, 800 nm): >1500 mW;
Repetition rate: 80 MHz;
Pulse duration: <100 fs;
CW mode:
Tuning range (@10W pump): 750-850 nm;
Output power (@10W pump, 800 nm): >2000 mW in CW;
Linewidth (with two etalons): <2 GHz
Also included:
Thermostabilized breadboard;
Electronic starter with TTL output for mode-locked mode observation;
USB-controlled tuning slit for wavelength tuning in fs mode;
3-plate USB-controlled birefringent Lyot filter;
Two motorized USB-controlled etalons for linewidth control

DPSS LH10 (10 Watt Diode Pump Solid State Laser)
Average Output Power > 10 W
Wavelength 532 nm
Spectral Purity > 99.9 %
Spatial Mode TEM00
Beam Quality (M2) 1.0 - 1.1
Beam Ellipcicity < 1.0 : 1.1
Beam Diameter 2.3 mm ± 10%
Beam Divergence < 0.5 mrad
Pointing Stability < 2 μrad/°C
Power Stability < ± 0.25 % rms
Noise Standard version: < 0.2 % rms
Low noise (NET) version: < 0.03 % rms
Polarization > 100:1 vertical
Power Requirements
Operating Voltage 100-240 VAC, 50 Hz / 60 Hz
Power Consumption 500 W max, 300 W typical
Cooling Requirements
Laser Head Closed-loop chiller in Power Supply - Cooler
Power Supply (in Power Supply - Cooler) Air-cooled
Environmental Specifications
Operating Temperature 64-90°F (18-32°C)
Relative Humidity 8-85%, non-condensing
Laser Head - Physical Dimensions (Height x Width x Length)
2.7 x 5.3 x 10.1 inches
(69 x 135 x 256 mm)
Weight 7.0 lbs (3.2 kg) approx.
Cable Length 10 " (3 m)
Power Supply-Cooler - Physical Dimensions (Height x Width x Depth)
13.0 x 12.7 x 18.2 inches
(330 x 323 x 463 mm)
Weight 55 lbs (25 kg) approx.


Trestles fs-CW manual

Schematic setup of Trestles femtoseconds/CW laser system with built-in pump laser

Schematic setup of Trestles LH10-fs/CW laser system with built-in pump laser

Del Mar Photonics supply Trestles lasers as stand alone system, or as a one-box system with built-in DPSS pump laser.
The price of the system with DPSS pump depends on required output power.


The standard tuning elements indicated below are used in CW Ti:Sapphire lasers such as Trestles CW or Trestles fs/CW.

Those elements are also sold separately as standrad items or as a custom made components.


1) Thick etalon - request a quote
Thickness - 3 mm, diameter - 20 mm. Surface quality: Ð=1-2, N<1, ΔN<0.1,
λ/10, plane parallelism better than 10''. Thickness accuracy 5 um.

2) Thin etalon - request a quote
Thickness - 200 um, diameter - 15 mm. Surface quality: Ð=1-2, N<1, ΔN<0.1,
λ/10, plane parallelism better than 10''. Thickness accuracy 5 um.

3) Birefringent filter BRF - request a quote

We use a 3-plate assembled BRF (Lyot filter) with adjustable motorized mount (see attached drawing).

Total losses introduced into the cavity by the filter are 5% of the laser’s output power. The FSR is defined by the thinnest plate and equals to around - 1.3*1014 Hz, while the maximum width is controlled by the thickest plate and equals to approx. 3.1*1012 Hz.

Dimensions of plate assembly ('filter' in the picture): dia 44.5 mm, t=13.5 mm. It should be properly aligned (Brewster to the beam) and rotated by some rotating mount around its axis to provide wavelength tuning.

Birefringent Filter for tuning Ti:Sapphire laser

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


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