Diffusion Bonding crystals

 Diffusion Bonded composite crystals are used to effectively decrease heat effect of Solid-State High-Power Laser.


 1. high damage threshold

 2. improve beam quality

 3. decrease thermal effect

 4. improve efficiency

 5. compact size


Composite laser rod is a crystal consisting of two, three or more parts with different dopant level. Usually, doped and undoped material used.

Dopant level and rod configuration can vary as well as the number of parts. It can have different wedged structure, Brewster angles, etc.







Nd:YVO4 Doping atm 0.2-3%
Nd:YAG Doping 0.5-1.1%

Wavefront Distortion

<1/8 lambda @ 633 nm

Scattering Sites

invisible, probed with a He-Ne laser



Dimensional Tolerance

± 0.1mm

End-faces Configuration


Surface quality

10/5 Scratch/Dig per MIL-O-13830B


1/10 lambda @ 633 nm

Clear Aperture

> Central 90%


< 10 arc sec.

Intrinsic Loss

< 0.1% cm -1


AR or HR coating



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