Quantitative measurement of the dispersion of χ⁽³⁾ in silica and silicon nitride in the 1-25 THz range

Binbin Zhou,Mattias Rasmussen,Siqi Yan,Narwan Kabir Noori,Oliver Nagy,Yunhong Ding,Simon Jappe Lange,Peter Uhd Jepsen

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

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摘要

Nonlinear optics is a highly developed topic in the near-infrared (near-IR) region. In the THz range, nonlinear effects are well known but have been studied to a much smaller extent than in the near-IR. Here we demonstrate a method for the quantitative measurement of the third-order nonlinearity of materials. The measurements directly reveal the absolute magnitude as well as the dispersion of the nonlinearity across an extended range up to 1-45 THz.

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关键词

frequency 1.0 THz to 25.0 THz,near-infrared region,nonlinear optics,Si3N4/bin,silica,silicon nitride,SiO2/bin,third-order nonlinearity,χ(3)

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Quantitative measurement of the dispersion of χ(3) in silica and silicon nitride in the 1-25 THz range

Quantitative measurement of the dispersion of χ⁽³⁾ in silica and silicon nitride in the 1-25 THz range