Del Mar Photonics - Rincon cross correlator brochure - Manual (sample)

Rincon Third Order Cross-Correlator (TOCC)

How good is the output from your femtosecond laser? The new third-order cross-correlator Rincon was specifically developed for measuring a wide array
of output parameters from ultrafast laser systems including: contrast ratio of laser pulses, determining pulse pedestal, pre- and post-pulses, and amplified spontaneous emission in femtosecond systems. It also provides information about the third-order cross-correlation function of pulse intensity on a femtosecond scale and can be used for alignment of high power femtosecond lasers. A portion of the input pulse is converted to the second harmonic (SH) with a nonlinear crystal. A dichroic mirror reflects the SH and transmits the fundamental thus splitting the beam into the two arms of the crosscorrelator. The fundamental beam arm includes a retro reflector and delay-line. After passing through the delay-line the fundamental is recombined with the SH and focused into a DKDP or BBO crystal (depending on the input pulse wavelength). Mixing the fundamental and SH pulses in the nonlinear crystal produces non-collinear third harmonic generation (TH). By filtering out the fundamental and SH frequencies, the TH can be isolated.
Measuring the TH signal as a function of the optical delay between the fundamental and SH pulses gives the third order cross correlation function. The third order cross-correlator is ideal for looking at the full range of output from amplified femtosecond laser systems. High temporal resolution over a long (close to 1 ns) window shows pulse features that are usually missed, giving the user a detailed and complete picture of the quality and stability of the output pulse parameters of their femtosecond laser system.
Rincon cross-correlator includes opto-mechanical assembly and electronics connected with USB interface for a PC. The system is easy to operate and includes a full set of user friendly software tools for data collection and analysis.

Each Rincon is optimized for customer laser system and required range of measurements.
The complete setup geometry, dimensions of non-linear crystals and some essential optics are all function of laser parameters and user-chosen tradeoffs between sensitivity, time resolution, time window, overall size etc.

We need the following information to set the tradeoffs and get all critical data necessary for the design which is optimized for your system:
1. What is wavelength of you laser system?
2. What is the repetition rate?
3. What is the normal pulse energy and beam diameter?
4. Is the laser pulse chirped?
5. What is the spectral bandwidth?
6. What is the pulsewidth?
7a. What is the expected (or estimated) contrast ratio as a function of delay from peak
7b. What is the minimum necessary contrast ratio as a function of delay from peak
8. What is beam quality (i.e. beam divergence relative to diffraction-limited one)
 

Rincon third-order cross correlator (TOCC). Rincon has been specifically developed for measuring a wide array of output parameters from ultrafast laser systems including: contrast ratio of laser pulses, determining pulse pedestal, pre- and post-pulses, and amplified spontaneous emission (ASE) in femtosecond systems.

Below are few examples of Rincon cross-correlator specifications optimized for different customer requirements.

Rincon third order scanning cross-correlator for 1054 nm laser (Model 1633)
Wavelength, nm: 1054
Dynamic range: 1010
Temporal range, ps: 950
Input radiation energy (pulse 40-50 fs), μJ: 6-30
Pulse duration, fs: >20
Repetition rate, kHz: <3
Input polarization, linear: horizontal
Resolution: 100 fs
Power supply: 100-240 V, 50/60 Hz 10%
Dimensions, mm:
Optical unit - 470 x 320 x 155
Control unit - 280 x 195 x 70

To request a quote for Rincon cross-correlator please e-mail sales@dmphotonics.com with detailed answers to the questions above.

Del Mar Photonics