Application of Optical Kerr Gate with SrTiO3 Crystal in Acquisition of Gated Spectra from a Supercontinuum  

作　　者：YAN Li-He JIA Sen SI Jin-Hai MATSUO Shigeki CHEN Feng HOU Xun 闫理贺;贾森;司金海;MATSUO Shigeki;陈烽;侯洵(Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic Technique,School of Electronics&Information Engineering,Xi’an Jiaotong University,Xi’an 710049;Department of Ecosystem Engineering,The University of Tokushima,2-1 Minamijosanjimacho,Tokushima 770-8506,Japan)

机构地区：[1]Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic Technique,School of Electronics&Information Engineering,Xi’an Jiaotong University,Xi’an 710049 [2]Department of Ecosystem Engineering,The University of Tokushima,2-1 Minamijosanjimacho,Tokushima 770-8506,Japan

出　　处：《Chinese Physics Letters》2012年第7期118-121,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 91123028 and 11074197;the National Basic Research Program of China under Grant No 2012CB921804;the Eyas Project of the Academy of Opto-Electronics,Chinese Academy of Sciences。

摘　　要：We investigate the optical Kerr effect of SrTiO3 (STO) crystal,of which the nonlinear response time was measured to be less than 200fs,while the nonlinear refractive index is estimated to be 2.16 × 10^(-15)cm^(2)/W.Using theoptical Kerr gate (OKG) technique with an STO crystal as the Kerr medium,we obtain narrow-bandwidth and symmetric gated spectra from a supercontinuum generated in distilled water by a femtosecond laser.The experimental results show superiority compared with the gated spectra obtained using OKG with CS2 as the Kerr medium,demonstrating that STO crystal is a promising OKG medium.

关 键 词：CRYSTAL SRTIO3 CONTINUUM 

分 类 号：O43[机械工程—光学工程]