| Phase Conjugation by Degenerate Four-wave Mixing in Nematic Liquid Crystals |
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| 作者姓名： | ZHONG Xiaoxia WU Jiada CHEN Shuchao WU Changzheng LI Fuming |
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| 作者单位： | State Key Joint Lab for Materials Modification by Laser，Ion and Electron Beams Department of Physics，Fudan University，Shanghai 200433，ChinaDepartment of Physics Xiamen University，Xiamen 3 |
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| 摘 要： | 1.IntroductionOpticalphaseconjugationhasbeeninvestigatedextensivelybecauseofitswideapplicationsinimagingtechnology,phase--conjugationlasers,andopticalassociativememorysystems.NotedfortheirlargeopticalreorientationnonlinearitiesIJ,nematicliquidcrystals(NLC)havebecomepromisingopticalmediaforapplicationsinthefieldofnonlinearopticsincludingnonlinearphaseconjugation.In1980,Feketectal.2)firstrealizedphase--conjugationbydegeneratefour--wavemixing(DFWM)inNLCintheisotropicphase.Sincethen,thefie…
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| 收稿时间： | 1996/12/27 |
Phase Conjugation by Degenerate Four-wave Mixing in Nematic Liquid Crystals |
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| ZHONG Xiaoxia,WU Jiada,CHEN Shuchao WU Changzheng, LI Fuming.Phase Conjugation by Degenerate Four-wave Mixing in Nematic Liquid Crystals[J].中国激光(英文版),1997,6(5):403-408. |
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| Authors: | ZHONG Xiaoxia WU Jiada CHEN Shuchao WU Changzheng LI Fuming |
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| Abstract: | Phase conjugation by degenerate four-wave mixing(DFWM) due to the optically induced molecular reorientation in nematic liquid crystals(NLC) is studied, and an analytical expression for the efficiency of phase conjugation is presented. Calculations of the efficiency are given for 5CB liquid crystal for further investigstion of the dependences of the phase conjugation on the angle between the pump beam and the probe beam as well as on the angle between the plane of the incident beams and the nematic director n. The physical mechanism is also discussed. |
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| Keywords: | nematic liquid crystal four-wave mixing phase conjugation |
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