Ho:Tm:YLF
Ho:Tm:YLF crystal is a 2μm laser crystal sensitized by Tm ions, and the output wavelength is 2.05μm linearly polarized laser. The pump wavelength is 792nm, and the working mode is: Tm ions absorb the 792nm pump light energy, transfer the energy to the upper energy level of the Ho ion laser through a non-radiative transition method, and emit laser light from the Ho ion. The advantage of this working method is that the structure of the laser is relatively simple, the laser efficiency is high , and it can be miniaturized. Its disadvantage is that the crystal has to bear a large heat loss and is not suitable for high-power output lasers.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal structure | Tetragonal |
| Melting point | 825°C |
| Moh's hardness | 4-5 |
| Density | 3.95g/ cm3 |
| Thermal conductivity | 0.06W/cm/K |
| Young's modulus | 7.5 dynes cm -2 × 1011 dynes cm -2 |
| Tensile strength | 3.3 dynes cm -2 × 108 dynes cm -2 |
| Coefficient of thermal expansion | [100] Direction: 13×10 -6 /K; [001] Direction: 8×10 -6 /K |
| Doping concentration | Doping concentration Tm:0~10at% Ho:0~3at%Can be customized according to customer requirements |
| Orientation | [100] or [001], deviation within 5º |
| Wavefront distortion [@632.8nm] | ≤0.25λ/25mm @632.8nm |
| Crystal rod size | Diameter: 3~9.5mm, Length: 5~120mm , can be customized |
| Dimensional tolerance | Diameter: +0.00/-0.05mm, Length: ± 0.5mm |
| Cylindrical processing | Grinding or Polishing |
| Parallelism of end faces | ≤10" |
| Perpendicularity between end face and rod axis | ≤5′ |
| Flatness of end face [@632.8nm] | ≤λ/10@632.8nm |
| Surface Quality | 10-5 (MIL-O-13830A) |
| Chamfer | 0.15±0.05mm |
| AR Coating Reflectance | ≤0.25% |
Key Features
Datasheet
Supplier Information
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