Ho:YLF
Ho:YLF, also called holmium-doped lithium yttrium fluoride, is a laser crystal with excellent overall performance. It is widely used in industry, medicine, and scientific research. It features a low nonlinear refractive index, small thermo-optic constants, and a long lifetime of the ⁵I₇ energy level. It can be used in solid-state laser products for remote sensing and pollutant monitoring.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Absorption peak wavelength | 1940nm |
| Absorption bandwidth at peak wavelength | -18nm |
| Laser Wavelength | 2060nm |
| Lifetime of the ⁵I₇ level | 10ms |
| Refractive Index [@1064nm] | n₀=1.448，nₑ=1.470 |
| Crystal Structure | Tetragonal |
| Density | 3.95g/cm³ |
| Mohs hardness | 5 |
| Thermal conductivity | 6 Wm⁻¹K⁻¹ |
| Coefficient of thermal expansion | 10.1×10⁻⁶（||c）K⁻¹、 14.3×10⁻⁶（（||a）K⁻¹ |
| Typical doping level | 0.5-1％ |
| Orientation | a-cut |
| Clear Aperture Dimension | >90％ |
| Face dimension tolerance | + 0/-0.1mm |
| Length Tolerance | ±0.1mm |
| Parallelism error | <10arcsec |
| Perpendicularity error | <10arcmin |
| Protective chamfer [@45˚] | <0.1mm @45˚ |
| Surface Quality | 10-5 S-D |
| Surface flatness [@632.8 nm] | <λ/10@632.8 nm |
| Double-sided coating [@1900-2100nm] | R<0.35%@1900-2100nm |
| Laser Damage threshold [@2060nm, 10ns] | >10J/cm²@2060nm, 10ns |
Key Features
Datasheet
Supplier Information
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