05 May 2011 Composite Laser crystals are Laser Crystals which have been fabricated by combining different parts. Typically, diffusion bonding of carefully prepared crystal surfaces is used to combine an Nd:YAG or Yb:YAG crystal with an undoped YAG crystal. The same can be done e.g. with Nd:YVO4. Another possibility is to bond a Cr:YAG crystal to Nd:YAG. In other cases, a nonlinear crystal material for nonlinear Frequency conversion is bonded to a laser crystal. Composite Gain media can also be made of glasses and from ceramics.
Nd:YVO4 Doping atm 0.2-3%
Nd:YAG Doping 0.5-1.1%
Wavefront Distortion Orientation ±0.5deg.
Dimensional Tolerance ± 0.1mm
Surface quality 10/5 Scratch/Dig per MIL-O-13830B
Flatness Clear Aperture > Central 90%
Parallelism < 10 arc sec.
Intrinsic Loss < 0.1% cm -1
Coating: AR or HR coating
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