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  Femtosecond Laser Systems for PHAROS
¤ýÀÛ¼ºÀÚ: ÀüÀçÇÊ ¤ýÀÛ¼ºÀÏ: 2016-07-27 (¼ö) 17:13 ¤ýÁ¶È¸: 865

PHAROS Laser
 
FEATURES
 - Pulse duration <190 fs - 10 ps
 - Pulse energy up to 2 mJ
 - Average power up to 20 W
 - Flexibility in repetition rate: single-pulse to 200 kHz (extendable to 1 MHz)
 - Broad range of wavelength conversion options (harmonic generators, OPA, NOPA, continuum generators)
 - Rugged mechanical design with sealed modules replaceable on field.

APPLICATIONS
 - Micromachining
 - Micro- and nano-structuring
 - Nonlinear optics
 - Time-resolved spectroscopy
 - Biomedical applications

  ¡°PHAROS¡± is built upon traditional chirped pulse amplification technique, employing seed oscillator, regenerative amplifier and pulse stretcher/compressor modules. Kerr lens mode-locked oscillator, incorporating chirped mirrors for compensation of group velocity dispersion, typically delivers >700 mW output with sub-80 fs pulse duration. Regenerative amplifier is based on Yb:KGW lasing medium. Amplifier is non-collinearly pumped by one or two (respectively 4W or 6-15 W ¡°PHAROS¡±) Light Conversion proprietary design high-brightness diode bar modules delivering up to 60 W of power. Conventional low loss BBO Pockels cells are used in regenerative amplifier and pulse picker at repetition rates up to 200 kHz (extendable to 1 MHz). The stretcher/compressor module is based on a single high efficiency  transmission grating with excellent power handling capability. Timing electronics, controls the operation of Pockels cells and monitors performance of the whole system. Separate modules of ¡°PHAROS¡± system are interlinked by a set of industrial CAN bus microcontrollers. Operating parameters are adjustable via remote control module or external PC connected via USB interface.

Standard "PHAROS" system delivers pulse energies up to 0.2 mJ or 0.4 mJ and minimum pulse duration shorter than 290 fs, somewhat varying with the repetition rate due to change in saturation level of the laser crystal. Short Pulse model PHAROS-SP incorporates modified resonator cavity with increased amplification bandwidth consequently delivering up to 1.5 mJ pulse energies and reduced pulse duration to <190 fs. 


PHAROS:

4 W

6 W

10 W

15 W

20W

SP

SP 1.5 mJ

2 mJ

Max. average power

4 W

6 W

10 W

15 W

20W

6 W

Min pulse duration*

<290 fs

<190 fs

<300 fs

Pulse duration range*

<290 fs - 10 ps

< 190 fs - 10 ps

<300 fs - 10 ps

Max. pulse energy

> 0.2 mJ or >0.4 mJ

>1.0 mJ

>1.5 mJ

> 2 mJ

Beam quality

TEM00; M©÷ < 1.2

TEM00; M©÷ < 1.3

Repetition rate

Single pulse - 200 kHz (extendable to 1MHz)

Center Wavelength

1028 +/- 5 nm

Output pulse stability

< 0.5 % RMS over 24 hours**

Pre-pulse contrast

< 1 :1000

Post-pulse contrast

< 1 : 200

Polarization

Linear, horizontal

Beam pointing stability

< 20 µrad/¡ÆC

Beam divergence

1.1x diffraction limited (of M©÷ < 1.2 or M©÷ < 1.3 beam)

Pulse selection

Single-Shot, Pulse-on-Demand, any base repetition rate division

Oscillator output

Optional, typical output 0.5-1 W ***, 76 MHz, < 100 fs


* Assuming Gaussian pulse shape. Pulse duration = ACF (FWHM) /1.41. Slightly varies with repetition rate.
**Under stable environmental conditions
***Available up to 6W.
Please contact us for customized version of "PHAROS".
Utility requirements

 Electric

110 VAC, 50-60 Hz, 20 A

220 VAC, 50-60 Hz, 10 A

Room temperature

15-30 ¨¬C (air conditioning recommended)

Relative humidity

20-80 % (non condensing)


Á¦Á¶»ç: www.lightcon.com 
Á¦Á¶±¹: Lithuania

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