Water Cooled Laser Gain Modules
Water Cooled Laser Gain Modules - Image 2
Water Cooled Laser Gain Modules - Image 3
Water Cooled Laser Gain Modules - Image 4
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Water Cooled Laser Gain Modules

For QCW DPSSL gain module gain distribution, pumping efficiency and life time are three most important indices. The gain distribution has two effects on beam quality. On one hand the energy density distribution sets the distribution of the gain and the non-uniform gain distribution result in changes of intensity distribution in near field; On the other hand thermal effect in the gain medium cannot be ignored at high frequency. Uniform energy density means uniform heat density and the wave-front distortion is parabolic, which can be regarded as a lens and compensated easily. While non-uniform energy density results in high order distortion which is hard compensated for and reduces the focusing ability of the beam. In multi-pass amplifier these effects come worse.

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Description

A heart of Diode-Pumped Solid-State (DPSS) lasers or laser amplifiers are Laser Gain Modules (pump chamber). By evolving laser gain modules, Geola Digital can provide DPSS laser gain modules based on Vertical Cavity Surface Emitting Laser (VCSEL) pumping engine technology. Our DPSS laser gain module engines assures uniform gain distribution, high pumping efficiency and long life time. We have two types of gain modules, namely Water cooled gain modules and Passively cooled gain modules. Typical air cooled DPSS Gain modules can be applicable for Nd:YAG Master Oscillator or Nd:YAG laser amplifier. The customized laser gain modules can be also designed and provided on request.

Main advantages

  • Low wavelength shift (0.07 nm/K)
  • Wide operation temperature range -20 ℃ — +75 ℃
  • High temperature working up to 75℃
  • Up to >20G shots life-time
  • Stored energy is up to 30% from optical pump energy
  • Uniform pumping distribution
  • Good power/size form factor

Application

  • Gain module for air cooled DPSS master oscillator
  • Gain module for air cooled DPSS Nd:YAG laser amplifier
  • Gain module for potential military application

Typical Water Cooled Laser Gain Models*

Gain Model No.Nd:YAG crystal, mmSLD chips, pcsElectrical Pump Power, WTypical Output Energy, mJ**
SLD-3×3-3∅391350>108
SLD-3×5-3∅3152250>180
SLD-3×7-3∅3213150>252
SLD-3×6-4∅4182700>216
SLD-3×10-4∅4304500>360
SLD-5×7-6∅6355250>420
SLD-5×9-6∅6456750>540
SLD-5×10-6∅6507500>600
SLD-5×15-6∅67511250>900
SLD-5×7-8∅8355250>420
SLD-5×9-8∅8456750>540
SLD-5×13-8∅8659750>780
SLD-7X6-10∅10426300>504
SLD-7×11-10∅107711550>924
SLD-7×15-10∅1010515750>1260
SLD-7×10-12∅127010500>840
SLD-7×15-12∅1210515750>1260
SLD-9×10-12∅129013500>1080
SLD-9×15-12∅1213520250>1620
SLD-9X10-15∅159013500>1080
SLD-10×14-15∅1514021000>1680
SLD-10×8-25.4∅25.48012000>960
SLD-10×24-25.4∅25.424036000>2880
SLD-12×20-25.4∅25.424036000>2880
SLD-15×16-25.4∅25.424036000>2880
*Specifications marked ‘typical’ are indications of typical performance and will vary with each unit we manufacture
**Data measured at 200us, 20Hz in a 250mm Plano-Plano cavity with T=20% output coupler.

Ordering information

Dimensions***

***One of design example

Module size, pump power, cooling fitting type and location and mechanical parts could be customized.

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