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PASSIVE CRYSTAL

Cr4+:YAG

Physical Properties

Chemical Formula

Cr4+:Y3A15O12

Crystal Structure

Cubic Garnet

Recovery Time

8.5us

Hardness Mohs

8.5

Density

4.56g/cm³

Orientation

[100]+/-10°

Thermal Conductivity

12.13W/m/k

Refractive Index

1.82@1064nm

Optical Properties

Base State Absorption Cross Section

δs1=4.3*10-18cm²

Emission State Absorption Cross Section

δs1=4.3*10-18cm²

Fluorescence Lifetime

3.4us

Capabilities

Cr4+Dopant Concentration

0.5mol%-3mol%

Aperture

2*2-14*14mm

Initial transmission

10%-99%

Typical Specification and Tolerance

Dimension Tolerance

(W+/-0.1mm)*(H+/-0.1mm)*(L+0.2mm/-0.1mm)

Flatness

<λ/8@633nm

Scratch/Dig

Better than 10/5 Scratch /Dig per MIL-O-13830A

Parallelism

<20 arc seconds

Perpendicularity

<5 arc minutes

Wavefront Distortion

Less than λ/8@633nm

Clear Aperture

>90% Central Area

Coating

Anti-reflective