Terahertz-wave detection in a GaP-based hybrid waveguide using a nonlinear optical parametric process

Kyosuke Saito, Tadao Tanabe, Yutaka Oyama

研究成果: Article査読

3 被引用数 (Scopus)

抄録

We design and simulate a GaP-based hybrid waveguide structure for room temperature terahertz-wave detection by using a nonlinear optical parametric process that is based on the photonic conversion from terahertz to the optical domain. The waveguide structure consists of a GaP rib waveguide for optical pump light, and an Si waveguide for the terahertz wave can provide the conversion from terahertz to the optical frequency domain. Owing to the strong confinement of the terahertz wave into the waveguide, high conversion efficiency of 0.05 W-1 (detection at 4.7 THz) can be achieved. The noise equivalent power for terahertz-wave detection by using an optical single photon detector is estimated to be 12 fW/Hz1/2, which is higher than that obtained using a commercially available 4.2 K Si bolometer.

本文言語English
ページ(範囲)708-713
ページ数6
ジャーナルJournal of the Optical Society of America B: Optical Physics
32
4
DOI
出版ステータスPublished - 2015 4月 1
外部発表はい

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 原子分子物理学および光学

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