Home > Archive>Volume 19, Issue 9, 2023 >541-547. DOI:https://doi.org/10.1007/s11801-023-3081-2
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Polarization-dependent ultrafast optical nonlinearities of N,N-dimethylformamide at 400 nm
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1. School of Physical Science and Technology, Tiangong University, Tianjin 300387, China;2. Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, China

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    Abstract:

    Ultrafast optical nonlinearities of N,N-dimethylformamide (DMF) are studied by using polarized light at 400 nm. Both nonlinear refraction (NLR) and stimulated Rayleigh-wing scattering (SRWS) depend on the polarization state of incident beam, while two-photon absorption (TPA) changes negligibly with polarization state. The polarization dependence of SRWS originates from that of NLR via self-focusing effect. Third-order susceptibility elements of DMF were determined, and a method to distinguish the multi-photon absorption signal from SRWS in Z-scan is provided. These results are helpful for the nonlinear optical research of the novel materials dissolved in DMF.

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ZHAO Xin, XUE Zhiyong, LIU Qingyang, YAN Xiaoqing. Polarization-dependent ultrafast optical nonlinearities of N, N-dimethylformamide at 400 nm[J]. Optoelectronics Letters,2023,19(9):541-547

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History
  • Received:May 06,2023
  • Revised:June 24,2023
  • Online: September 20,2023
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