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<p>This paper demonstrates the characteristics of the THz parametric frequency upconversion detection based on the stimulated polariton scattering in KTiOAsO<sub>4</sub> (KTA) crystal pumped by a 1064&#xa0;nm pulsed laser (420 ps, 1&#xa0;Hz). The detectable spectral ranges can be from 3.54 to 4.03 THz, from 4.08 to 4.50 THz, from 4.71 to 5.16 THz, and from 5.87 to 6.32 THz. The minimum detectable energy is 0.24 fJ at 4.92 THz with a dynamic range of 57 dB.</p>

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Terahertz parametric upconversion detection based on KTiOAsO4 crystal

  • 期刊论文

  • 发表日期：

    2025年1月16日

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  • Na Ming,
  • Shuzhen Fan,
  • Xingyu Zhang,
  • Xiaohan Chen,
  • Zhenhua Cong,
  • Zhaojun Liu,
  • Dechun Li,
  • Quanxin Guo,
  • Liyuan Guo,
  • Binzhe Jiao,
  • Jiasheng Yuan,
  • Kaiyu Wang,
  • Naichang Liu

摘要

This paper demonstrates the characteristics of the THz parametric frequency upconversion detection based on the stimulated polariton scattering in KTiOAsO4 (KTA) crystal pumped by a 1064 nm pulsed laser (420 ps, 1 Hz). The detectable spectral ranges can be from 3.54 to 4.03 THz, from 4.08 to 4.50 THz, from 4.71 to 5.16 THz, and from 5.87 to 6.32 THz. The minimum detectable energy is 0.24 fJ at 4.92 THz with a dynamic range of 57 dB.