- 首頁
- 產(chǎn)品
- Passive Q-switch Crystal
Passive Q-switch Crystal
Cr4+-YAG
Passive Q-Switching is preferred for simplicity of manufacturing and operation, low cost and reduced system size and weight. Cr4+:YAG (Y3Al5O12) is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Yb:YAG or other Nd and Yb doped lasers at wavelength from 1.0 to 1.2 mm. Because of its chemically stable, durable, UV resistant, good thermal conductivity and high damage threshold (> 500 MW/cm2) and being easy to be operated, it will replace traditional materials, such as, LiF, organic Dye and color centers.
Advantages of Cr4+:YAG Crystals
- Providing high power laser pulses without electro-optic Q-switches
- More robust and stable than dyes or color centers
- High damage threshold
Capabilities:
|
Cr4+ dopant:
|
0.5 mol% ~ 3 mol%
|
|
Aperture:
|
2x2 ~ 14x14mm
|
|
Length:
|
0.1 ~ 12mm
|
|
Initial Ttransmission
|
10% ~ 99%
|
Specifications:
|
Orientation:
|
<111> or <100> within 5°
|
|
Dimensional Tolerance:
|
+/-0.1mm
|
|
Flatness:
|
<λ/8 at 633nm
|
|
Surface Quality:
|
20/10 Scracth/Dig
|
|
Parallelism:
|
< 20 arc seconds
|
|
Perpendicularity:
|
< 5 arc minutes
|
|
Wavefront Distortion:
|
<λ/8 at 633nm
|
|
Clear Aperture:
|
Central 90%
|
|
Chamfer:
|
0.15x45°
|
|
Coating:
|
* S1,S2: AR@1064nm
* S1: HR@1064nm; S2: AR@1064nm |
|
Chemical Formula
|
Cr4+:Y3A15O12
|
|
Crystal Structure
|
Cubic garnet
|
|
Recovery time
|
8.5μs
|
|
Hardness Mohs
|
8.5
|
|
Density
|
4.56g/cm
|
|
Orientation
|
[100]+/-10°
|
|
Thermal conductivity
|
12.13w/m/k
|
|
Refractive index
|
1.82 @ 1064nm
|
|
Base state absorption cross section
|
σs1=4.3x10-18cm2
|
|
Emission state absorption cross section
|
σs2=8.2x10-19cm2
|
|
Fluorescence lifetime
|
3.4us
|
*When ordering Cr4+:YAG crystal, please specify the aperture, initial transmission(To) and coatings.
