Efficient terahertz detection in a sheet cavity using a nonlinear optical parametric process

Kyosuke Saito, Tadao Tanabe, Yutaka Oyama

研究成果: Article

抜粋

We designed and simulated a GaP-based sheet cavity structure for room-temperature THz wave detection via a nonlinear optical (NLO) parametric process, using photonic conversion from THz frequencies to the optical domain. The sheet cavity structure consisted of a GaP rectangular waveguide for THz waves. Pump enhancement in the cavity and strong confinement of the THz wave in the waveguide resulted in a high power conversion efficiency of 1% (detection at 5 THz). The noise equivalent power for THz wave detection using an optical single-photon detector was estimated to be in the order of a few fW Hz-1/2, which was higher than that obtained using room-temperature bolometers, field-effect transistors, and other NLO processes.

元の言語English
ページ(範囲)5475-5480
ページ数6
ジャーナルApplied Optics
54
発行部数17
DOI
出版物ステータスPublished - 2015 6 10
外部発表Yes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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