Tm:YAP Crystal

- Excellent physical and chemical properties. 

- Higher output efficiency at 2μm than Tm:YAG. 

- Direct output of linearly polarized light. 

- LD pump absorption bandwidth is 4nm wider than that of Tm:YAG crystal. 

- The 795nm pump band matches the emission wavelength of AlGaAs diodes better.


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Product Details

Tm:YAP crystal is one of the most important crystals for LD pumping 2μm laser. The anisotropic structure of Tm:YAP produces anisotropic emission cross section. Tm:YAP crystals with different orientations have different output wavelengths and operating forms for different functions. Compared with the physical and chemical properties of Tm:YAG, the 795nm pump absorption band of Tm:YAP matches the emission wavelength of commonly used high-power AlGaAs diodes better. Tm:YAP has many advantages such as 4nm wider pump absorption bandwidth than that of Tm:YAG, higher efficiency, direct output of linearly polarized light. 


Main Specifications

Dimensions

Length

2 ~ 100 mm (± 0.5 mm)

Diameter

2 ~ 10 mm (+0.00, -0.05 mm)

Tm Concentration

0.2 ~ 15.0 atm%

Orientation

[010] or [100] (± 5°)

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°

Extinction Ratio

 25 dB

Coating

AR (R<0.25% @ 1980/1940 nm)


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