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A. Miller, D. A. B. Miller, and S. D. Smith
"Dynamic Nonlinear Optical Processes in Semiconductors" Adv. Phys. 30,
697-800 (1981). In this article active non-linear optical effects in
semiconductors are reviewed. These processes arise because of the dynamics of excited
populations of charge carriers temporarily created in otherwise empty states when a beam
of laser radiation is incident on the material. A large number of different effects have
been observed in different semiconductor materials recently and the non-linearities cover
a wide range of magnitudes both in time-scale and size of non-linearity. the theory and
physical concepts relevant to these processes are described and experimental observations
using both high power pulsed and low power c. w. lasers are reviewed. Applications in
optical bistability, phase conjugation, optical gating and optoelectronic gating are
discussed.
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