A Model of Optical Bistability and Polarisation Evolution in Birefringent χ(2) Nonlinear Media |
| W. Jędaa and A. Zagórskib a Systems Research Institute, Polish Academy of Sciences, Newelska 6, 01-447 Warszawa, Poland b Institute of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland |
| Received: April 14, 1999; in final form June 9, 1999 |
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| We present a model calculation of optical bistability and polarisation evolution in optically birefringent media based on the interaction of three waves. Second-order optical nonlinearity (described by the third rank susceptibility tensor) is assumed to be dominant. A bistable light transmission is analysed in terms of standard Fabry-Perot model of feedback, and is a direct consequence of the results obtained for a semi-infinite medium. A second effect considered in the paper is evolution of polarisation state of the waves involved in these processes. We derived a closed formula for intensity-dependent refractive index, which corresponds to that used in the case of third-order nonlinear media. As a result, we calculated both intensity and Stokes parameters of transmitted light. |
| DOI: 10.12693/APhysPolA.96.373 PACS numbers: 42.65.Pc, 42.65.Hw |