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Intensity-activated birefringence zero-crossing shift in CuAlSe2 crystal

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Abstract

We describe a new nonlinear-optical phenomenon called the intensity-activated birefringence zero-crossing shift. This phenomenon leads to the shift of the transmission curve of the gyrotropic isoindex spectral filter. The phenomenon was observed with 33-psec, 532-nm Nd3+:YAG laser pulses in CuAlSe2 semiconductor crystal. An anisotropic refractive-index nonlinearity with an approximately 200-psec switch-off time is responsible for the shift. Possible applications for light by light-control devices are discussed.

© 1990 Optical Society of America

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