Cr:YAG

Cr4+:YAG (Y₃Al₅O₁₂) is an ideal material for passive Q-switching of Nd:YAG and other Nd and Yb doped lasers in the wavelength range of 0.8 to 1.2 mm. One of the remarkable features of Cr4+:YAG is high damage threshold of 500-1000 MW/cm². Passive Q-Switching is preferred for simplicity of manufacturing and operation, low cost and reduced system size and weight.
The preliminary experiments of Cr:YAG showed that the pulse width of passively Q-switched lasers could be as short as 9 ns for diode pumped Nd:YAG lasers and repetition as high as 10kHz for diode pumped Nd:YVO₄ lasers. Furthermore, an efficient green output @ 532 nm, and UV output @ 355 nm and 266 nm were generated, after a subsequent intracavity SHG in KTP or LBO, THG and 4HG in LBO and BBO for diode pumped and passive Q-switched Nd:YAG and Nd:YVO₄ lasers.

Specifications:

T0	From 5% to 98%
Dimension tolerance	(W ± 0.1 mm) x (H ± 0.1 mm)
Transmitting wavefront distortion:	l/8 @ 633 nm
Clear aperture:	> 90% central area
Flatness:	l/8 @ 633 nm
Scratch/Dig code:	10/5 to MIL-O-13830A
Parallelism:	better than 20 arc seconds
Perpendicularity:	5 arc minutes
Angle tolerance:	Dq < ±0.5°, Df < ± 0.5°
AR coating:	R< 0.2% at 1064nm
Quality Warranty Period:	one year under proper use.