Abstract

We investigate the optical Kerr nonlinearity and multiphoton absorption (MPA) properties of 4-N, N-dimethylamino-4’-N’-methyl-stilbazolium 2, 4, 6-trimethylbenzene-sulfonate (DSTMS) excited by femtosecond pulses at a wavelength of 1.43 µm, which is optimal for terahertz generation via difference frequency mixing. The MPA and the optical Kerr coefficients of DSTMS at 1.43 µm are strongly anisotropic, indicating a dominating contribution from cascaded second-order nonlinearity.

© 2021 Optical Society of America

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Data Availability

Data underlying the results presented in this paper are available in Ref. [35].

35. J. Li, R. Rana, L. Zhu, C. Liu, H. Schneider, and O. Pashkin, “Data publication: Optical Kerr nonlinearity and multi-photon absorption of DSTMS measured by Z-scan method,” Rodare, 2021, https://rodare.hzdr.de/record/1063.

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