Chromium Doped Yttrium Aluminium Granat (Cr4+: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 µm.
One of the remarkable features of Cr4+:YAG is high damage threshold of 500 ... 1000 MW/cm2. It is easy to be operated and therefore outstandingly suited to replace LiF and Dye which are commonly used for passive Q-switching.

KOMLAS offers Cr4+:YAG crystals with Ar-coating and standard dimension of diameter 9.5 mm (other dimensions on request).

Basic Properties:

Crystal structure: Density [g/cm-3]: Mohs hardness: refractive index @1064 nm: Thermal conductivity [W/m/K]: Doping level [mol%]: Initial transmission [%]:

cubic garnet 4.56 8.5 1.82 12.13 0,5 to 3 1 to 99

Typical absorption spectra for Cr4+:YAG (70 % initial transmission, pulses 1 ns Nd:YAG)