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 | Gallium selenide is a nonlinear optical material and photoconductor and it is mainly used for such applications as second harmonic generation of CO2-lasers, up-conversion of CO2-laser radiation image into near-IR or visible region, frequencies mixing in the middle IR region, differential frequencies generation (DFG) in the middle IR region from 5.5 to 18.0 µm |
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| Structure | 62m; a = 3.74 ; c = 15.89 |
| Density | 5.03 g/cm3 |
| Mohs hardness | 2 |
| Eg, eV | 2.02 |
| Refractive indices at 5.3 µm | no = 2.8340; ne = 2.4599 |
| Refractive indices at 10.6 µm | no = 2.8136; ne = 2.4389 |
| Refractive index at 0.633 µm | no= 2.9365 |
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| Diameter/Width | 5-30 mm (can be elliptical) |
| Thickness/Length | 0.1-40 mm |
| Orientation | X, Y, Z |
| Surface quality | Cleaved |
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