Ultrafast nonlinear refractive effect and mechanism of solvent nitrobenzene

Song Yinglin; Li Zhongguo

doi:10.3788/IRLA201746.0502001

The third-order nonlinear refractive index n2 of nitrobenzene liquid was studied using Z-scan technique under femtosecond and picosecond laser pulses. The Z-scan results demonstrate that the n2 value under 20 ps, 532 nm laser pulse excitation is 11 times larger than that under 300 fs, 800 nm excitation. The mechanism of nonlinear refraction dynamics of nitrobenzene was investigated using pumpprobe with phase object technique under femtosecond pulses excitation. The nonlinear response function of nitrobenzene under ultrafast laser excitation was determined from the pump-probe experimental results. The target of the present work is to provide a reference for future work of integrated photonic device and nonlinear optical measurement based on solvent nitrobenzene.

Ultrafast nonlinear refractive effect and mechanism of solvent nitrobenzene

1. Department of Physics,Harbin Institute of Technology,Harbin 150001,China;

2. College of Physics & Electronic Engineering,Changshu Institute of Technology,Changshu 215500,China

Received Date: 2017-05-01

Rev Recd Date: 2017-05-10

Publish Date: 2017-05-25

Key words:

Abstract: The third-order nonlinear refractive index n2 of nitrobenzene liquid was studied using Z-scan technique under femtosecond and picosecond laser pulses. The Z-scan results demonstrate that the n2 value under 20 ps, 532 nm laser pulse excitation is 11 times larger than that under 300 fs, 800 nm excitation. The mechanism of nonlinear refraction dynamics of nitrobenzene was investigated using pumpprobe with phase object technique under femtosecond pulses excitation. The nonlinear response function of nitrobenzene under ultrafast laser excitation was determined from the pump-probe experimental results. The target of the present work is to provide a reference for future work of integrated photonic device and nonlinear optical measurement based on solvent nitrobenzene.

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Ultrafast nonlinear refractive effect and mechanism of solvent nitrobenzene

doi: 10.3788/IRLA201746.0502001

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