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Cr4+:YAG Crystal
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Cr4+:YAG Crystal Passive Q Switch Crystal
Chromium doped yttrium
aluminum garnet or Cr4+:YAG has higher damage
threshold and is mostly used in passively Q-switching diode
pumped or lamp pumped passive Q-switching materials. Its
main advantages are high damage threshold, and absorptions
wavelength of 900nm--1200nm, and peak of around 1060nm with
large absorption section
We supplies a wide variety of
finished crystals. Our general production of Cr4+:YAG
follows:
|
Main
Specifications |
| Cr4+
dopant concentration |
0.5 mol% ~ 3 mol% |
|
Aperture: |
2x2 ~ 14x14mm |
| Length: |
0.1 ~ 12mm |
| Initial
transmission: |
10% ~ 99% |
|
Coating: |
Antireflective |
| Angle
tolerance: |
Δθ< ± 0.5°; Δφ< ±0.5° |
|
Dimension tolerance: |
(W ± 0.1mm) x (H ±
0.1mm) x (L + 0.2mm/-0.1mm) |
|
Parallelism |
better than 20 arc
seconds |
| Surface
quality |
better than10/5
Scratch/Dig per MIL-O-1380A |
| Surface
flatness |
<λ/10 at 632.8nm |
| Clear
aperture |
Central 95% |
| Chamfer |
0.15x45?/font> |
|
Perpendicularity: |
5 arc minutes |
|
Wavefront distortion |
less than λ/8 @ 633nm |
NOTES:
To inquire or order a
finished Cr4+ crystals, please provide
specification as listed above, particularly the size,
initial transmission and coatings.
|
Physical Properties |
|
|
Chemical Formula |
Cr4+:Y3A15O12 |
|
Crystal Structure |
Cubic garnet |
|
Recovery time |
8.5μs |
|
Hardness |
8.5 Mohs |
|
Density |
4.56g/cm |
|
Orientation |
[100]+/-10° |
|
Thermal conductivity |
12.13w/m/kv |
|
Refractive index |
1.82 @ 1064nm |
|
Optical Properties |
|
|
Base state absorption
cross section |
σs1=4.3x10-18cm2 |
|
Emission state
absorption cross section |
σs2=8.2x10-19cm2 |
|
Fluorescence lifetime |
3.4us |
contact cscbbs@126.com | 
