Formation of domain reversal by direct irradiation with femtosecond laser in lithium niobate

作     者：朱海生 陈险峰 陈洪云 邓学伟 

作者机构：Department of Physics the State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems Shanghai Jiao Tong University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2009年第7卷第2期

页      面：169-172页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (No. 10734080 and10574092) the National "973" Program of China(No. 2006CB806000) 

主　　题：Electromagnetic pulse   Laser windows   Lasers   Lithium   Niobium compounds   Three dimensional   Ultrashort pulses 

摘      要：We propose that domain inversion can be directly induced by femtosecond laser both theoretically and experimentally, which opens a path to achieve three-dimensional （3D） nonlinear crystal with a period in sub-micron-scale. A simulation of domain inversion is modeled by considering the temporal distribution of femtosecond pulses. The calculation results clarify that the domain inversions can happen within or after the interaction with the laser pulse, and the response time of domain inversion is in the picosecond level depending on the intensity and the materials. The domain reversal windows of lithium niobate by femtosecond laser are observed which agrees with theoretical predictions qualitatively.