摘要
Femtosecond time-resolved single-shot optical Kerr gating （OKC） measurements are performed by focusing the probe pulse and using a cylindrical lens to introduce a spatially encoded time delay with respect to the pump pulse. By measuring the pump power and polarization dependence of the OKC signals in CS2, the contribution of self-diffraction effect which is independent of the nonlinear response time of the material is directly observed on the rising edge of the time-resolved OKC signals. The influence of the self-diffraction effect on the optical Kerr signal could be controlled effectively by varying the polarization angle between pump and probe pulses.
Femtosecond time-resolved single-shot optical Kerr gating （OKC） measurements are performed by focusing the probe pulse and using a cylindrical lens to introduce a spatially encoded time delay with respect to the pump pulse. By measuring the pump power and polarization dependence of the OKC signals in CS2, the contribution of self-diffraction effect which is independent of the nonlinear response time of the material is directly observed on the rising edge of the time-resolved OKC signals. The influence of the self-diffraction effect on the optical Kerr signal could be controlled effectively by varying the polarization angle between pump and probe pulses.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 11304242,11474078 and 61427816
the Natural Science Basic Research Plan in Shaanxi Province under Grant No 2014JQ1024
the Financial Support from China Postdoctoral Science Foundation under Grant Nos 2013M542335 and 2014T70924
the Collaborative Innovation Center of Suzhou Nano Science and Technology
