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 mm.

One of the remarkable features of Cr4+:YAG is high damage threshold (better than 500 MW/cm2).

Passive Q-Switching is preferred for simplicity of manufacturing and operation, low cost and reduced system weight and size.

Basic Properties

Crystal Structure	Cubic
Density	4.56g/cm³
Mohs Hardness	8.5
Recovery Time	8.5us
Thermal Conductivity	12.13W/m/K
Loss Coefficient	0.003cm^-1
Refractive Index	1.82 @1064nm
Base State Absorption Cross Section	4.3x10^-18/cm²
Emission State Absorption Cross Section	8.2x10^-19/cm²
Fluorescence Lifetime	3.4us

Specifications

Orientation	The rod axis is along [100] within5°,[111] and [110] within5°
Cr4+ concentration	0.5 mol% ~ 3 mol%
Dimension	2×2~20×20mm
Initial Transmission	5%~99%
Dimension Tolerance	±0.1mm
Surface Flatness	<λ/8@633 nm
Parallelism	<20 arc seconds
Perpendicularity	<5 arc minutes
Surface Quality	20/10 Scratch and Dig
Clear Aperture	>95%
Coating	AR/HR/PR coating upon customer’s request

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

Information

Product Line

WARRANTY

All products are guaranteed to be in specifications in material and workmanship for a period of 12 months after shipment.
We do not assume liability for installation, labor or consequential damages.
This warranty is not suitable for failure of the products due to misuse, abuse, accident, or neglect.

Contacts

Deln Optics
E-mail: [email protected]

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