论文信息 - Anomalous optical Freedericksz transition in an absorbing liquid crystal

Anomalous optical Freedericksz transition in an absorbing liquid crystal

Abstract Laser-induced reorientation was studied in absorbing nematic films. The optical Freedericksz threshold occured at an intensity level of 50 W/cm2 in contrast to the normally observed few KW/cm2 value for transparent layers. Thermomechanical coupling is considered as a possible explanation of the observed anomaly.

[1] The Influence of the Finite Size of the Light Spot on the Laser Induced Reorientation of Liquid Crystals , 1982 .

[2] I. Jánossy,et al. An experiment on the thermomechanical coupling in cholesterics , 1982 .

[3] R. Beyer,et al. Soviet Physics—JETP , 1960 .

[4] H. Brand,et al. On the influence of higher order gradient terms on the hydrodynamics of liquid crystals , 1980 .

[5] I. Jánossy,et al. Laser-Induced Distortion of Nematic Liquid Crystal Films and Observation of Cavityless Optical Bistability Due to Thermal Effects , 1986 .

[6] Nelson V. Tabiryan,et al. Orientational Optical Nonlinearity of Liquid Crystals , 1986 .

[7] Nasser N Peyghambarian,et al. Optical Bistability III , 1986 .

[8] F. M. Leslie. Some thermal effects in cholesteric liquid crystals , 1968, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.