Tm:YAG
Tm:YAG operates on the ³H₄–³H₆ transition in the 0.82μm wavelength region and can be pumped by efficient diode lasers in the 0.78–0.8μm range. The transition has a small quantum defect, enabling low heat dissipation. A long excited-state lifetime, on the order of milliseconds, supports good energy storage, while sufficient gain bandwidth supports sub-ps pulses depending on the host material and operating temperature. Compared with single crystals, transparent ceramics combine advantages of crystals and glass. They are manufactured by solid-state reaction and vacuum sintering, offering optical and thermal properties comparable to single crystals together with large sizes and high concentrations. Additional advantages include short manufacturing cycles, lower cost and multifunctional samples.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Tm Concentration tolerance | Tm:0.5~5at% |
| Orientation | [111]，<5º |
| Parallelism | ≤10″ |
| Perpendicularity | ≤5′ |
| Surface Quality | 10-5 (MIL-O-13830A) |
| Wavefront distortion [@632.8nm] | ≤ 0.125λ/25 mm @632.8nm |
| Surface Flatness [@632nm] | λ/8@632nm |
| Clear Aperture Dimension | >95% |
| Chamfer | 0.15±0.05mm |
| Dimensions | D: 2~10mm，L: 3~150mm |
| Coating [@2μm] | AR: ≤0.25% @2μm |
| Laser transition | ³F₄→³H₆ |
| Laser Wavelength | 1.87~2.16μm |
| Temperature dependence of refractive index | 7.3 10⁻⁶/K |
| Diode pumping band | 785nm, 680nm |
| Fluorescence lifetime | 11ms |
| Refractive Index [@632nm] | 1.83 |
Datasheet
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