Optical absorption in doped CdxHg1-xTe
Abstract
Temperature dependence of the absorption edge of CMT is discussed. The theory of optical absorption in heavily doped (degenerate) cadmium mercury telluride (CMT) is formulated to use measured band parameters. The absorption theory is compared with Anderson's (1980) approximation to Kane's (1957) k.p. theory. The differences are found to be small near threshold, due to a fortuitous cancellation of errors. The dispersion of the refractive index near the band gap is calculated. This has only a small effect on the calculated absorption, but could be of importance in modeling interference fringes in thin detectors.
- Publication:
-
Unknown
- Pub Date:
- August 1987
- Bibcode:
- 1987oadc.rept.....H
- Keywords:
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- Doped Crystals;
- Mercury Cadmium Tellurides;
- Photoabsorption;
- Photoconductors;
- Temperature Dependence;
- Energy Gaps (Solid State);
- Refractivity;
- Solid-State Physics