Fast and sensitive nonlinear processes - Bistability in CdHgTe

Details Fast and sensitive nonlinear processes - Bistability in CdHgTe Fast and sensitive nonlinear processes - Bistability in CdHgTe

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rspta.313..277m&link_type=abstract

(Royal Society, Discussion on Optical Bistability, Dynamical Nonlinearity and Photonic Logic, London, England, March 21, 22, 198

Physics

Optics

5

Laser Plasma Interactions, Mercury Cadmium Tellurides, Nonlinear Optics, Optical Bistability, Refractivity, Semiconductor Plasmas, Auger Effect, Beam Switching, Carbon Dioxide Lasers, Multiphoton Absorption, Pulsed Lasers, Time Response

Scientific paper

The origin and characteristics of the very large intensity-dependent changes in the refractive index of the semiconductor cadmium mercury telluride at 10.6 microns are discussed. With continuous wave (c.w.) radiation and sample temperatures of 77 K nonlinear Fabry-Perot effects can be observed at powers as low as 1 mW. The Auger dominated recombination process and the thermal contributions to the refractive index make observations of optical bistability difficult with c.w. radiation. However, the use of a pulsed CO2 laser and two-photon absorption of the radiation does lead to the observation of bistability at room temperature. These results are compared with the reported work on InSb.

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