Giant Optical Nonlinearities in Nematic Liquid Crystals

摘要: The advent of coherent high-intensity laser sources has made apparent that the light itself can change optical properties medium. As a result, new field in physics originated: nonlinear optics. Nonlinear phenomena are so important for both fundamental and practical reasons nowadays main part concerns Many devices powerful techniques based on harmonic generation, stimulated scattering light, wavemixing, phase conjugation, self focusing other effects have been developed. Usual materials, however, very small nonlinearity, pulses required. To obtain appreciable using cw sources, medium is needed having exceptionally high response. development materials showing such huge nonlinearity still progress. In case Kerr-like response material measured by (δn its refractive index n produced itself.