Ho:Cr:Tm:YAG レーザ結晶
Ho:Cr:Tm:YAG is a high efficiency laser material which lases at 2.1µm. It has wide applications in surgery, dentistry, atmospheric testing, etc.
Advantages of Ho:Cr:Tm:YAG Crystal
- High slope efficiency
- pumped by lamp or diode
- Operates well at room temperature
- Operates in a relatively eye-safe wavelength range
Optical and Spectral Properties
| Laser Transition | 5I7 - 5I8 |
| Laser Wavelength | 2.097 µm |
| Photon Energy | 9.55 x 10-20 J |
| Emission Cross Section | 7 x 10-21 cm2 |
| Fluorescence Lifetime | 8.5 ms |
| Index of Refraction | 1.80 @2.08 µm |
| Absorption Linewidth | 4 nm |
| Diode Pump Band | 781 nm |
| Major Pump Bands | 400～800 nm |
Specifications of Ho:Cr:Tm:YAG crystal from CASTECH
| Dopant concentration | Ho:～0.35 at%, Tm:～5.8 at%,Cr:～1.5at% |
| Wavefront Distortion | ≤0.125λ/inch(@1064nm) |
| Extinction Ratio | ≥25 dB |
| Rod Sizes | Diameter:3～6mm,Length:50～120mm Upon request of customer |
| Dimensional Tolerances | Diameter:+0.00/-0.05mm, Length: ± 0.5mm |
| Barrel Finish | Ground Finish: 400# Grit |
| Parallelism | ≤30" |
| Perpendicularity | ≤5′ |
| Flatness | λ/10 |
| Surface Quality | 10/5 |
| Chamfer | 0.006"±0.002" at 45°± 5° |
| AR Coating Reflectivity | ≤ 0.25% (@2094nm) |
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- Ho:Cr:Tm:YAG レーザ結晶
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