The color centers of type FA in KCl single crystals doped with NaCl or LiCl have been used for image recording by He–Ne laser at room temperature. The optical transmission of the crystals changed linearly with change in the logarithm of incident energy in a certain range. By applying a linearly polarized light beam to anisotropic color centers (FA center), both negative and positive images were obtained from a single stored image.
REFERENCES
1.
2.
F. Luty, Physics of Color Centers, edited by W. B. Fowler (Academic, New York, 1968).
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F.
Lanzl
, U.
Röder
, and W.
Waidelich
, Appl. Phys. Letters
18
, 56
(1971
).4.
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© 1973 American Institute of Physics.
1973
American Institute of Physics
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