|
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-1 x °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° |
|
Nd:YAG rod
Nd:YVO4
KTA
Er:YAG
(Nd, Ce):YAG
Yb:YAG
