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Photorefractive Crystals in Coherent Optical Systems (Paperback, Softcover reprint of the original 1st ed. 1991)
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Photorefractive Crystals in Coherent Optical Systems (Paperback, Softcover reprint of the original 1st ed. 1991)
Series: Springer Series in Optical Sciences, 59
Expected to ship within 10 - 15 working days
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The phenomenon of photorefraction was discovered in 1966 in studies
of propagation of a fairly powerful laser beam through the
electro-optic crys- tals LiNb0 , LiTa0 , and some other compounds.
The laser beam illumi- 3 3 nating part of the sample was found to
cause a local change in the refrac- tive index of the crystal,
thereby leading to distortion of the beam's wave front. The light
had deteriorated the initially high optical quality of the crystal,
in other words, it had given rise to a nonuniform distribution of
the refractive index in the illuminated region. The effect was
first called "opti- cal damage". The practical significance of the
phenomenon was soon appreciated, applications were proposed, and a
. vast amount of activity began. In the years that followed, the
phenomenon was termed the "photorefractive ef- fect". Because of
the reversible behavior of the refractive index variations due to
photorefraction, photorefractive crystals have been regarded as re-
cyclable photosensitive media. This became a valuable finding for
optical engineers engaged in holography and optical information
processing. On the other hand, the research into the nature of the
photorefractive effect proved to be of considerable interest to
physicists working in the fields of solid-state physics,
semiconductors, and coherent optics.
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