Cadmium Selenide - CdSe Crystals
Coherent sources in the mid-IR domain have potential applications in molecular spectroscopy, biomedicine, and remote sensing. Laser systems with CdSe crystal have obvious advantage – much broader tuning range [1-3]. In… Read more →
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| SKU | Size · Orientation · Resistivity | |
|---|---|---|
| CdSe-0921-01 | 6x4x2 mm·<0001>·high resistivity (3E11 Ohm'cm) |
Out of stock
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| CdSe-0921-02 | 5x5x0,5 mm·<0001>·high resistivity (3E11 Ohm'cm) |
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| CdSe-0921-03 | 5x5x0,5 mm·<0001>·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-04 | 5x5x1 mm·"c"·low resistivity (<1 Ohm'cm) |
Out of stock
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| CdSe-0921-05 | dia5x5 mm·<0001>·high resistivity (3E11 Ohm'cm) |
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| CdSe-0921-06 | dia12,7x3,2mm·<0001>·high resistivity (3E11 Ohm'cm) |
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| CdSe-0921-07 | dia25x5 mm·random oriented·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-08 | dia25x5 mm·<0001>·high resistivity (3E11 Ohm'cm) |
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| CdSe-0921-09 | 8x8x8 mm·random oriented·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-10 | 8x10x30mm·Θ=78°; Φ=0°; cut for NCPM type II (oe-o)·- |
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| CdSe-0921-11 | 10x10x0,5mm·"c"·high resistivity (3E11 Ohm'cm) |
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| CdSe-0921-12 | 10x10x0,5mm·<0001>·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-13 | 10x10x0,5mm·<0001>·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-14 | 10x10x0,5mm·random oriented·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-15 | 10x10x1mm·<0001>·low resistivity (<1 Ohm'cm) |
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| CdSe-0921-16 | 10x10x1mm·<0001>·high resistivity (3E11 Ohm'cm) |
Out of stock
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| CdSe-0921-17 | 10x10x1mm·"c"·low resistivity (<1 Ohm'cm) |
Out of stock
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| CdSe-0921-18 | 10x10x2mm·(10-10)·low resistivity (<1 Ohm'cm) |
Out of stock
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| CdSe-0921-19 | 25x15x1mm·(10-10)·low resistivity (<1 Ohm'cm) |
Out of stock
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Specifications
Specifications
| Structure: | Wurtzite (Hexagonal) |
| Density: | 5.81 g/ cm3 |
| Young’s Modulus: | 5×1011 dyne/cm2 |
| Coef. of Thermal Expansion (500 K): | α 1=6.26×10-6/K; α 3=4.28×10-6/K |
| Specific Heat: | 0.49 J/gK |
| Thermal conductivity (at 25 °C): | 0.04 W/cmK |
| Max. Transmittance (λ =2.5-15 μm): | ≥ 71 % |
| Absorption Coef. (λ =10.6 μm): | ≤ 0.0015 cm-1 (including 2 surfaces) |
| Refractive index (λ =10.6 μm): | no= 2.4258, ne=2.4437 |
| Max. single crystal diameter/length: | Ø50.8×40 mm |
| Max. IR optic blank diameter/length: | Ø50×50 mm or plate 60×60×6 mm |
| Surface quality: | As-cut, 60/40 scratch*dig per MIL-0-13830 |
Description
Coherent sources in the mid-IR domain have potential applications in molecular spectroscopy, biomedicine, and remote sensing. Laser systems with CdSe crystal have obvious advantage – much broader tuning range [1-3]. In the difference-mixing of the output of parametric oscillator in CdSe to obtain the phase matched 9.4-24.3 µm tuning range [5]. CdSe crystal has its band edge in the near infrared and shows transmission far into the infrared. The long wavelength limit determined by the onset of lattice absorption 1.5 cm-1 @ 24.3µm.
There is also a narrow impurity absorption centered at 18.5um which varies from one crystal to another. As a nonlinear optical material, CdSe crystal was explored for OPG, OPO and DFG in 1970’s [4,5]. First of all, picoseconds pulses tunable from 10 to 20 µm were produced [6]. Furthermore, CdSe was also used to achieve megawatt peak power in the range of 8-13 and 7-12 µm, based on OPG and OPO respectively [7,8].
Sellmeier equations [4]: