Diffusion Bonded Crystals

Diffusion Bonded Crystals consist of one laser crystal and one or two undoped material.They’re combined by optical contact method

Classification:

Laser Crystals

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Detailed introduction

Diffusion Bonded Crystals consist of one laser crystal and one or two undoped material.They're combined by optical contact method and further bonded under high temperature.Diffusion Bonded Crystals can effectively decrease thermal lensing effect considerably,therefore they are very suitable for high power laser applications.

Tipical Products

Nd:YAG+Cr⁴⁺:YAG series

It’s an integrated structure which makes laser cavity miniaturized. It can effectively shorten the cavity length and narrow the pulse width. It is normally used in device miniaturization, microchip laser and laser seed source, etc.

YAG+Nd:YAG, YVO₄+Nd:YVO₄ series

Due to non-absorption and excellent thermal conductivity of YAG, these diffusion bonded crystal can be used to strengthen the heat dissipation and improve the thermal effect. It’s one of the solutions for high power laser to improve thermal effect.

Er,Yb:glass+Co:spinel

It can produce 1.5um ‘eye safe’ laser when pumped with 940nm semiconductor laser. The laser made with this diffusion bonded crystal has simple structure, small size and high stability. It is widely used in laser ranging, laser radar and so on.

Specifications
Dimension	Diameter:1~50mm,Length:0.3~220mm(Customized available)
Dimension Tolerance	Φ:+0/-0.04mm,L:+0.5/-0mm
Perpendicularity	≤5′
Parallelism	≤10″
Chamfer	0.15±0.05mm
Clear Aperture	＞95%
Surface Quality	10/5(MIL-PRF-13830B)
Barrel	Fine Ground, Polishing, Grooving
Flatness	≤λ/10@632.8nm
Wavefront Distortion	≤λ/10 per inch@632.8nm
Extinction Ratio	≥30dB
Coating	AR coating:R<0.15%@1064nm,R<0.5%@808nm,R<0.15%@532nm
	PR coating:R=(10~90)%±2%@1064nm
	HR coating:R>99.8%@1064nm,R>99.8%@808nm
Damage Threshold	≥1GW/cm²@1064nm,10ns,10Hz

Material	Concentration	Aperture (mm)	Length (mm)
Nd:YAG+Cr⁴⁺:YAG	Nd:0.1at%~3.0at%,Cr:0.6~8.5/cm	2×2~20×20	0.5~200
YAG+Nd:YAG	0.1at%~3.0at%	2×2~20×20	0.5~200
YAG+Nd:YAG+YAG	0.1at%~3.0at%	2×2~20×20	0.5~200
YAG+Nd:YAG+Cr⁴⁺:YAG	Nd:0.1at%~3.0at%,Cr:0.6~8.5/cm	2×2~20×20	0.5~200
YVO₄+Nd:YVO₄	0.1at%~3.0at%	2×2~20×20	0.5~200
YVO₄+Nd:YVO₄+YVO₄	0.1at%~3.0at%	2×2~20×20	0.5~200
YVO₄+Nd:YVO₄+YVO₄	0.1at%~3.0at%	Φ2~15	0.5~200
Glass+Er,Yb:glass+Co:spinel	Co:0.12at%~0.85at%	1×1~3×3	8~10