Nonlinear Optical Phenomena in Solids.
Final technical rept. 1 Sep 81-15 Jun 85,
HONEYWELL INC BLOOMINGTON MN
Pagination or Media Count:
The nonlinear optical properties of Hg1-xCdxTe for x values between 0.20 and 0.23 have been evaluated experimentally under C02 laser excitation at 295 K, 77K, and 12 K. Optical phase conjugation arising from conduction band nonparabolicity and the photoexcited plasma mechanisms has been studied. A new effect in which the phase conjugate signal is erased or quenched by means of a separate C02 laser has been observed. The mechanism depends upon an enhanced Auger recombination rate due to two-photon absorption. Optical absorption data were obtained on eight samples of Hg1-xCdxTe over the interval from 10 to 40 micrometers and interpreted theoretically in terms of interband, intraband, impurity, and lattice absorption measurements. The temporal behavior of degenerate four-wave mixing and optical bistability was studied theoretically for a superlattice or quantum well for both absorptive photoexcited plasma and dispersive conduction band nonparabolicity mechanisms. The third order susceptibility due to both conduction band nonparabolicity and the photoexcited plasma mechanisms in both GaAsAlxGa1-xAs and Hg1-xCdxTeHg1-yCdyTe superlattices has been investigated theoretically.
- Solid State Physics