Laser Crystals

Cr⁴⁺:YAG Crystal

Cr⁴⁺:YAG crystal, also known as chromium-doped yttrium aluminum garnet crystal, is an excellent passive Q-switch crystal.

The main characteristics are:

1.Good thermo-mechanical properties, suitable for high average power operation;

2.High doping concentration (up to ~10^18 cm^-3), conducive to device miniaturization;

3.Large absorption cross-section near 1 μm (~10^-18 cm²);

4.Appropriate excited state lifetime (~3.4 μs);

5.Low saturation energy density;

6.High damage threshold (500 MW/cm²).

Parameter	Specification
Orientation	<100> ±5°
Flatness	<λ/10
Parallelism	≤30″
Perpendicularity	≤5′
Surface Finish	20/10 (MIL-O-13830A)
Laser Wavelength	950 nm – 1100 nm
Dimensions	Diameter: 3–20 mm<br>Length × Width: 3×3–20×20 mm<br>Customizable as per client requirements
Dimensional Tolerance	Diameter: +0.000/-0.05 mm<br>Length: ±0.5 mm
Chamfer	≤0.15 mm @45°
Initial Transmittance	2%–97%
Anti-reflection Coating	R ≤0.2% @1064 nm