257nm Nd:YAG q-switched picosecond laser

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257nm Nd:YAG q-switched picosecond laser
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257nm laser is one of the series of solid state laser provided by ULaser. It is based on the fourth harmonic wave of Nd:YAG crystal. Q-switched crystal bonded with laser crystal is used to emit 800ps output beam. And it can also be called as 257nm microchip laser.

Our 257nm laser has pure and stable output light. It has very low full angle beam divergence. Both horizontal and vertical one can down to 2mrad@1/e2. Our 257nm laser supports internal and external triggers. And it has has fully sealed modules for secondary development.

Our 257nm laser can performs well in ultraviolet way. It is perfect in micromachining, laser spectra, photoacoustic imaging, etc.

Main features Application
  • Pulse width up to 800ps
  • Pulse energy up to 100 μJ
  • Maximum repetition rate up to 2KHz
  • Beam mode is TEM00
  • Material micromachining
  • Spectral detection
  • Lidar
  • Pump source
  • Biomedical science

257nm MJ Model and Parameter

ModelUL257-1KHz-8μJ-MJ001
Wavelength(nm)257
Repetition frequency (KHz)1*
Average power(mW)8
Output energy(uJ)8
Pulse width (ps)800
Power stability (8h)±3%
Beam modeTEM00
Full-angle divergence angle Typ. (Mrad) level @ 1/e22
Vertical @1/e22
Polarization characteristics＞100:1
System power consumption（W）≤15
Power input100-240 VAC,50/60Hz
Control interfaceRS232、USB
Power supply size (W × H × L, mm)168×88×140
Laser head size (W × H × L, mm)45×30×120
Working temperature (℃)15-35
Storage temperature (℃)0-60
1.*The light outlet of the laser head is side outlet. See the mechanical dimension drawing for details
2.Customized internal beam expansion function to meet the requirements of small divergence angle (less than 2mrad)
257nm MJ Microchip laser system PDF

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