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Wed May 17 2017
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Cr4+:YAG Q-switch Laser crystal

Cr:YAG is an excellent passive Q-switch crystal, for 0.8 to 1.2 µm lasers: Nd:YAG, Yb:YAG. Cr:YAG is chemically stable, durable, UV resistant, good thermal conductivity and high damage threshold. Cr:YAG can also be used as a laser crystal tuable at 1340 - 1580nm.

Cr:YAG Crystal

Advantages of Cr4+:YAG over active acousto-optic and electro-optic Q-switch:

- No high voltage power supply needed
- Compact diffusion bonding available
- Higher reliability & longer lifetime
- Lower cost OEM components

Properties of Cr4+:YAG Crystal

Chemical Formula: Cr4+:Y3Al5O12
Crystal Structure: Cubic Garnet
Density: 4.56g/cm³
Hardness: Mohs 8.5
Thermal Conductivity: 12.13W/m.K
Refractive Index: 1.82 @ 1064 nm
Fluorescence lifetime: 3.4 µs
Base state absorption cross section: 4.3x10E-18 cm²
Emission state absorption cross section: 8.2x10E-19 cm²

Specifications of Cr4+:YAG Crytal

Aperture: 2x2mm to 15x15mm
Length: 0.1mm to 12mm
Initial Transmission*: 10% to 99%
Orientation: <100>, <110>, <111>
Surface Quality: Better than 10/5 Scratch-Dig
Parallelism: < 10 arcsec.
Transimission Wavefront Distortion: < λ/8
Coating: R<0.2%@1030-1064nm or upon customer's specs
Damage Threshold: > 1GW/cm² ns pulse
Dopant Level: 0.5 mol% ~ 3 mol%

Cr4+:YAG crystal Order Information

Standard and custom sizes Cr:YAG crystals are available with AR or HR coating per customer's specs. Price subjects to change without notice. OptoCity also offer Cr:YAG crystal bonding with Nd:YAG, Yb:YAG at very competitive price, please send us an e-mail to request for quote.


1. Cr4+:YAG crystal

CR103, 3 x 3mm-T% Cr:YAG crystal AR/AR


CR105, 5 x 5mm-T% Cr:YAG crystal AR/AR


CR110, 10 x 10mm-T% Cr:YAG crystal AR/AR


CR212, Dia. 12.7mm-T% Cr:YAG crystal AR/AR


Additional message: qty. initial transmission, coating...


Cr4+:YAG crystal Inquiry

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