Ultrafast non-resonant third-order optical nonlinearity of GeS2-Ga2S3-CdS chalcogenide glass

作者：Hou, Yanan; Liu, Qiming^*; Zhou, Hui; Gao, Chang; Qian, Shixiong; Zhao, Xiujian

来源：Solid State Communications, 2010, 150(17-18): 875-878.

DOI：10.1016/j.ssc.2010.02.001

• Chalcogenide glass
• Third-order optical nonlinearity
• Ultrafast response
• Optical Kerr effect

Ultrafast third-order nonlinear optical responses of 4(1 - x)/5GeS(2)-(1 - x)/5Ga(2)S(3)-xCdS (x = 0.05, 0.10 and 0.15 in mol%) chalcogenide glasses was investigated by using the femtosecond time-resolved optical Kerr effect technique at a wavelength of 800 nm The largest third-order nonlinear susceptibility of all samples was estimated to be 1 65 x 10(-13) esu. An ultrafast nonlinear response time of about 250 fs was observed, which was dominantly assigned to the ultrafast distortion of the electron cloud under femtosecond laser excitation. A nonlinear relationship between the third-order nonli

• 出版日期2010-5
• 单位武汉理工大学; 复旦大学