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Crystals Q-Switch 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.

Physical and Chemical Properties:

Please view Laser crystals physical Properities (dpf format)

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.


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.

Note: When ordering Cr4+:YAG crystal, please specify the aperture, initial transmission(To) and coatings.


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