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Tm:YAG Crystal
The self-quenching mechanism of the H4 and F4 levels of Tm:YAG crystals can generate two-photon excitation at the upper level, potentially making it an efficient way for lasers to achieve high quantum efficiency. Tm:YAG crystals are widely used in lidar and other atmospheric detection fields because of their operating wavelength of 2013nm. The fluorescence lifetime of Tm in Tm:YAG crystal is twice as long as that of Tm:YAP crystal, the emission cross-sectional area of Tm:YAG crystal is slightly lower than that of Tm:YAP crystal, and the peak absorption band is 785nm, which is more suitable for semiconductor diode pumping.
Main Specifications | ||
Dimensions | Length | 3 ~ 150 mm (± 0.5 mm) |
Diameter | 2 ~ 10 mm (+0.00, -0.05 mm) | |
Tm Concentration | 0.5 ~ 8.0 atm% | |
Orientation | [111] (± 1°) | |
Wavefront Distortion | λ/4 per inch @ 633 nm | |
Barrel Finish | Fine ground (400#) | |
End Surface Parallelism | ≤ 10” | |
Perpendicularity | ≤ 5’ | |
End Surface Flatness | λ/10 @ 633 nm | |
End Surface Quality | 10-5 [s-d] (MIL-PRF-13830B) | |
Chamfer | 0.15 ± 0.05 mm @ 45° | |
Coating | AR (R<0.25% @ 2013 nm) | |
