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.
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)
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。
