High cubic nonlinearity of liquids in the broadband THz spectral range

Here we report the direct measurement of the nonlinear refractive index coefficient of liquids by using the Z-scan method with broadband pulsed THz beam. The results fit with conventional Z-scan analytics well. We estimate the nonlinear refractive index coefficient n 2 of liquids through the use of...

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Bibliographic Details
Main Authors: Zhukova, Maria O., Melnik, Maksim V., Tcypkin, Anton N., Vorontsova, Irina O., Putilin, Sergey E., Kozlov, Sergei A., Zhang, Xi-Cheng
Format: Conference Proceeding
Language:English
Subjects:
Broadband communication
Liquids
Nonlinear optics
Optical refraction
Optical variables control
Refractive index
Ultrafast optics
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Summary:Here we report the direct measurement of the nonlinear refractive index coefficient of liquids by using the Z-scan method with broadband pulsed THz beam. The results fit with conventional Z-scan analytics well. We estimate the nonlinear refractive index coefficient n 2 of liquids through the use of the theoretical treatment that takes the ionic vibrational contribution into account. This estimation correlates with experimental data obtained.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8874389