光伏光折变空间孤子的相互作用以及耦合复色光伏孤子-光学专业论文.docxVIP

非相干亮弧子闻只存在相互吸引的蝴互作用，与棚于孤子的相互作用显然不同，并 非相干亮弧子闻只存在相互吸引的蝴互作用，与棚于孤子的相互作用显然不同，并 豆它们秘籀互俸焉是菲弹性静，穗互作滔静大小每它们翡距蕊、先强以及毙茯效应 系数和光电效应系数都有关系。 4．第四章：对耦台亮一亮复色光伏孤子和糕合亮-暗复色光伏孤子进行研究，给 密亮．亮笈色孤子舔半麓宽与它稍光缀静近似关系；发瑰无论惹亮一亮复色光茯{!|鑫子 还是亮．暗复色光伏孤子都可通过双曲正割光束近似地实现：亮-亮复色光伏孤子和 亮．暗复色光伏孤子都舆育较好的稳定性。 5．簸霜总结已宽减的工{辛以及对未来工捧的展望。 关键词：孤子、光折变效应、光伏效应、相互作用、稷合 ll ABSTRACTThe ABSTRACT The soliton theory has extensive applications in many scientific fields such as fluid mechanics，nonlinear optics，classical and quantum fields theories etc．Since the KdV equation，i．e．the shallow water wave equation，was presented in 1895，the theory and experiments of soliton have achieved great development．L．F．Mollenaner,R．H．Stolen． J．Oordon et a1．in Belt laboratory have showed the possibility of using light pulse soliton technology in silica optical fibers to improve the operation of communication system therefore increase the transfer rate．It is expected that solitons will have more and more applications in technologies as the solitoa phenomena in different fields are studied deeply in the future． Photorefractive spatial soliton(PRSS)is one kind of optical spatial solitons and has become one of the central topic in nonlinear optics in recent years．In 1992 Segev et a1． predicted theoretically the existence of PRSS for the first time and in the next year Duree et a1．observed the quasi·steady-state PRSS experimentally in SBN crystal．Thereafter, great progress has been made on the study of PRSS，The photovoltaic spatial sollton (pvss)，which was predicted theoretically by Valley in 1994．is one type of PRSS．The dark PVSS and bright PVSS were observed by Taya et a1．in LiNb03 in 1 995 and by She et越，in Cu：KNSBN in 1999 respectively．Interestingly,it does not need an applied electric field to make PVSS，SO the PVSS has the potential application in all·optical switch technology． In this thesis，we study some of interesting phenomena of PVSS that have not been studied before，which includ the interaction of tWO solitons with different frequencies and