Cr4+:YAG

  • Update:Jun 13, 2017
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Cr4+:YAG Cr4+:Y3Al5O12- Passive Q-switches or saturable absorbers provide high power laser pulses without electro-optic Q-switches thereby reducing the size and eliminating a high voltage power supply.

Product Introduction

Cr4+:Y3Al5O12- Passive Q-switches or saturable absorbers provide high power laser pulses without electro-optic Q-switches, thereby reducing the package size and eliminating a high voltage power supply. Cr4+:YAG is more robust than dyes or color centers and is the material of choice for 1 um Nd lasers.   

Physical and Chemical Properties

Formula Cr4+:Y3Al5O12
Crystal structure cubic
Mohs hardness 8.5
Melting point: 1970 °C
Density, g/cm3 4.55
Thermal conductivity at 25°C 0.14 W x cm-1x °K-1
Thermal expansion coefficient 7.8 x 10-6/ ℃ <111>  8.2 x 10-6/ ℃ <100> 7.7×10-6/ ℃ <110>
Young's Modulus 3.17x104kg/mm2
Thermal Shock Resistance 790 Wm-1

 Standard Specifications

Orientation: <111>within 5° or <100>within 5°
Flatness < λ/10
Parallelism ≤ 30"
Perpendicularity ≤ 5 ′
Surface quality 20-10(MIL-O-13830A))
Wavelength:   950 nm~1100nm
Initial transmittance: 5%~95%
Damage threshold ≥ 500MW/cm2
AR coating reflectivity ≤ 0.2% (@1064nm)
Size Diameter:3~20mm   H × W:3 × 3~20 × 20mm
Dimensional tolerances  Diameter: ± 0.00/-0.05",   Length: ± 0.05"  Chamfer: 0.07+0.005/-0.00" at 45°  

 

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