Item NO.:
GS-L007Payment:
L/C、 Western Union、 D/P、 T/TProduct Origin:
Anhui, ChinaMax Size:
Dia100mmOrientation:
<100>、<110>、<111>Package:
100 clean bag，1000 exactly clean bagProduct Detail
Specification
Process flow
Packaging
Transportation
FAQ
Tm: YAP crystal name Thulium-doped yttrium aluminate crystal, Tm: YAP crystal has an ideal medium for a solid-state laser source with a wavelength of 2 microns , and the self-quenching mechanism of the H4 and F4 energy levels of Tm: YAP can generate two-photons at the upper energy level. Excitation, which potentially makes the laser an effective way to obtain high quantum efficiency. The absorption band peak of H6 and H4 energy levels of Tm:YAP crystal is 795nm, which is very suitable for high-power AlGaAS laser diode pumping. And Tm: YAP crystal width of the absorption peak value than Tm: YAG crystals are wider, such that Tm: YAP crystal even when the wavelength change of flowing the diode is an ideal laser material.
The wavelength of the laser light emitted by the Tm:YAP crystal is related to the crystal direction. The most common cutting directions are a direction and b direction.
| Tm: YAP crystal | "A" cutting | "B" cut |
| Absorption peak | 794.8nm | 793.5nm |
| Peak effective pump absorption coefficient (4% Tm) | aa=3.6/cm | aa=3.3/cm |
| Peak emission wavelength | 1.98μm | 1.98μm |
Advantages of Tm:YAP crystals:
1)Excellent physical and chemical properties;
2)2 m m -band laser output efficiency is higher than Tm: YAG;
3)Direct linearly polarized light output;
4)LD pump absorption bandwidth is 4nm widerthan Tm:YAG crystal ;
5)The 795nm pump absorption band is bettermatchedthan the commonly used AlGaAs diode emission wavelength.
Technical index:
|
Doping concentration |
Tm: 0.2~15at% |
|
Crystal orientation |
[010] or [100] ( Pnma ), within 5° of deviation |
|
Crystal size |
Diameter 2~10mm, length 2~100mm Can be customized according to customer requirements |
|
Wavefront distortion |
≤ 0.125 l /25mm at 632.8nm |
|
Extinction Ratio |
≥ 25dB |
|
Dimensional tolerance |
Diameter: +0.00/-0.04, length ± 0.5mm |
|
Cylindrical processing |
Fine grinding or polishing |
|
Parallelism of end face |
≤ 10" |
|
Perpendicularity of end face and rod axis |
≤ 5′ |
|
Flatness of end face |
l /8 at 632.8nm |
|
Surface finish |
10/5 (MIL-O-13830A) |
|
Inverted |
0.15±0.05mm |
|
Anti-reflection coating reflectivity |
≤ 0.25% |
Spectral characteristics:
|
Optical transition |
3 F 4 ® 3 H 6 |
|
Absorption cross section |
3.7~8.5 x 10 -21 cm 2 |
|
Fluorescence lifetime |
4.4~7.7ms |
|
Emission cross section |
5~6 x 10 -21 cm 2 |
|
Emission wavelength |
1.98 m m@a axis, 1.94 m m@b axis |
|
Diode pump wavelength |
794.8nm@a axis,793.5nm@b axis |
Physical and chemical properties :
|
|
YAP |
|
Space group |
D 162h (Pnma) |
|
Lattice Changshu ( Å ) |
a=5.307, b=7.355, c=5.176 |
|
Melting point ( ℃ ) |
185 0 ± 30 |
|
Thermal conductivity (W · cm -1 · K -1 ) |
0.11 |
|
Coefficient of thermal expansion (10 -6 · K -1 ) |
4.3//a, 10.8//b, 9.5//c |
|
Density (g/cm -3 ) |
5.35 |
|
Refractive index |
1.943//a, 1.952//b, 1.929//c @589nm |
|
Hardness ( Mohs ) |
8.5-9 |
|
|
YAP |
|
Space group |
D 162h (Pnma) |
|
Lattice constants( Å ) |
a=5.307, b=7.355, c=5.176 |
|
Melting point( ℃ ) |
185 0 ± 30 |
|
Thermal conductivity(W · cm -1 · K -1 ) |
0.11 |
|
Thermal expansion(10 -6 · K -1 ) |
4.3//a, 10.8//b, 9.5//c |
|
Density(g/cm -3 ) |
5.35 |
|
Refractive index |
1.943//a,1.952//b,1.929//c at 0.589 m m |
|
Hardness(Mohs scale) |
8.5-9 |
711, Block B, Greenland Blue Sea, Government District, Hefei, Anhui, China
Tel : 0086-13721114787
Whatsapp : 13721114787
Email : info@haibeiflavor.com
Friendly Links :
