Cr4:YAG Passive Q-Switch Crystals
Cr4+:YAG crystals have several advantages when compared to traditional Passive Q-switching choices such as organic dyes and colour centres materials. Crystal Passive Q-switch is preferred for simplicity of manufacturing and operation, low cost, and reduced system size and weight. Cr4+:YAG is chemically stable, UV resistant and it is durable. Cr4+:YAG will operate over a wide range of temperatures and conditions. The good thermal conductivity of Cr4+:YAG is well suited for high average power applications.
Main features
* High damage threshold of 500-1000 MW/cm2
* High chemical stability and reliability
* Long life time and good thermal conductivity
* Compact passive Q-Switch
* Being easy to be operated
Application examples
* Passively Q-switched lasers for laser rangefinders, LIDAR and LIBS systems
* Laser systems where short pulses are required.
Main Properties:
| Diameter |
6.35 mm |
| |
0 mm / +0.05 mm |
| Typical Length |
2 mm to 10 mm |
| Parallelism |
30 arc-sec. max |
| Flatness |
λ/2 at 632 nm Max. |
| Refractive Index |
1.82 at 1.064µm |
| Standard Optical Densities |
0.40 +/- 10% |
| |
0.50 +/- 10% |
| |
0.60 +/- 10% |
| |
1.00 +/- 10% |
| Saturation Fluence |
near to 0.5 J/cm2 |
| Recovery Time |
8.5 µs |
| Repetition Rate |
> 30 Hz |
| AR coating |
0.3% per surface |
| Damage Threshold |
> 500 MW/cm2 |
| Chemical Formula |
Y3Al5O12:Cr4+ |
| Orientation |
<111 > cubic |
