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physica status solidi (b)

Effect of Optical Feedback on Self‐Induced Change of Light Polarization in Cubic Crystals with Directions Instable for Polarization

A. Brodin, Sergey A. Boiko, Mykhailo Ya. Valakh, Georgiy G. Tarasov

Published Dec 1, 1988• 3 citations
Publisher

Abstract

Abstract Polarization optical bistability (POB) in crystals with FA‐centers mounted into a Fabry‐Perrot cavity is analysed. This type of optical bistability is caused by amplification of fluctuations of light polarization in crystals under consideration and has no threshold on radiation intensity. The range of parameters is found for impure crystals and cavity under POB conditions.

DOI
10.1002/pssb.2221500232

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Abstract Polarization optical bistability (POB) in crystals with FA‐centers mounted into a Fabry‐Perrot cavity is analysed. This type of optical bistability is caused by amplification of fluctuations of light polarization in crystals under consideration and has no threshold on radiation intensity. The range of parameters is found for impure crystals and cavity under POB conditions.
An analysis is made of a polarization optical bistability in crystals containing FA centers and placed in a resonator. The bistability is due to the possibility of amplification of fluctuations of the polarization of radiation in such crystals and in practice has no threshold in respect of the radiation intensity. An analysis is made of the ranges of values of the parameters of a doped crystal and of a resonator in which this bistability can be observed. The analysis is carried out for ring and Fabry–Perot resonators.
An analysis is made of nonlinear optical phenomena associated with a change in the orientation of the director of a liquid crystal induced by an optical field and resulting in optical bistability. The usual configurations with a nonlinear Fabry-Perot resonator and several other configurations are considered. Bistable cells with cholesterics are proposed: in these cells the nonlinearity is associated with the absorption of the incident and reflected light and is related—via the temperature of the cell—to the cholesteric helix period. Devices are considered in which switching from one state to another takes place as a result of a change in radiation parameters (such as the frequency or polarization) other than the power.