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HCT:YAG
Triple-doped Holmium:Chromium:Thulium YAG (Ho:Cr:Tm:YAG) is a laser material which emits radiation at 2097 nm. HCT:YAG can be pumped by a flashlamp or with laser diodes. It is widely used in military, medicine, and meteorology. Lasers are able to work at a room temperature, havę high slope efficiency, and operate at a wavelength where the threshold for eye damage is relatively high. Main diode pump band is at 785 nm but it can also be pumped between 400 and 800 nm.
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Optola offers wide range of HCT:YAG crystals sizes by request.
| Orientation: | <111> or <100> crystalline within 5° |
| Wavefront distortion : | λ/8 per inch @ 633 nm |
| Extinction Ratio: | >25dB |
| Dimension Tolerances | Rods with diameter: ±0.03 mm , Length: ±0.5 mm |
| Surface quality: | 10/5 Scratch / Dig |
| Parallelism: | < 10 arc seconds |
| Perpendicularity: | < 5 arc minutes |
| Flatness: | < λ/10 @ 633 nm |
| chamfer: | <0.1 mm @ 45deg. |
| Barrel Finish: | 50-80 micro-inch (RMS) , |
| AR Coating Reflectivity | <0.25% |
| 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 |
