CdSe, also known as cadmium selenide crystal. It is a nonlinear crystal product with excellent comprehensive performance, widely used in solar cells, light-emitting diodes, high-energy ray detection and other fields.
| Product No. | Size（mm) | θ（°） | Φ（°） | Coating Application |
| CdSe-301 | 5×5×1 | 39° | 45° | BBar/BBar@1.2-2.4/2.4-11μm, AOI=0° |
| CdSe-302 | 6×6×2 | 50° | 0° | BBar/BBar@1.2-2.4/2.4-11μm, AOI=0° |
| CdSe-303 | 8×8×1 | 39° | 45° | BBar/BBar@1.2-2.4/2.4-11μm, AOI=0° |
| CdSe-304 | 8×8×2 | 50° | 0° | BBar/BBar@1.2-2.4/2.4-11μm, AOI=0° |
| ARGUMENT NAME | VALUES AND RANGES |
|---|---|
| Structure | Wurtzite (hexagonal) |
| Crystal growth | HPVB / HPVZM |
| Density | 5.81 g/ cm³ |
| Young's modulus | 5×10¹¹ dyne/cm² |
| Coefficient of thermal expansion (500 K) | α1=6.26×10¯⁶/K; α3=4.28×10¯⁶/K |
| Specific heat capacity | 0.49 J/gK |
| Thermal conductivity (@25℃) | 0.04 W/cmK |
| Eg, eV (E∥<0001>, 300 K) | 1.73 |
| Eg, eV (E⊥<0001>, 300 K) | 1.705 |
| Maximum transmittance (λ=2.5-15 μm) | ≥ 71 % |
| Absorption coefficient (λ=10.6 μm) | ≤0.0015 cm¯¹ (including 2 surfaces) |
| Refractive index (λ=10.6 μm) | n₀= 2.4258, nₑ=2.4437 |
| Maximum single crystal size | Ø50.8×40 mm |
| Maximum infrared optical blank size | Ø50×50 mm, 60×60×6 mm |
| Surface quality | As-cut, 60/40 scratch*dig per MIL-0-13830 |
| Resistivity | Low: < 1 Ohm*cm High: > 10¹² Ohm*cm |
♦ Small birefringence and good angle discreteness
♦ Wide phase matching band
♦ Excellent optical and electrical properties
♦ No phonon absorption in the 8~15μm band
♦ Wide light transmission band (0.75 to 25μm)
♦ Medium effective nonlinear coefficient (d31=18pm/V)
♦ Very low light absorption (<0.01cm-1, 1~10μm)
♦ Optoelectronics
♦ Polarizer
♦ Spectroscope
♦ Infrared optics
♦ Vacuum coating source
♦ Solar cell
♦ Light emitting diode
♦ Functional transistor
♦ Optical parametric oscillation
♦ Room temperature nuclear radiation detector
