Terahertz-wave generation by GaP rib waveguides via collinear phase-matched difference-frequency mixing of near-infrared lasers

Kyosuke Saito, Tadao Tanabe, Yutaka Oyama, Ken Suto, Jun Ichi Nishizawa

研究成果: Article査読

20 被引用数 (Scopus)

抄録

We constructed rib waveguides from GaP material using an inductively coupled plasma reactive ion etching technique based on Ar/ Cl2 gas application. We obtained a waveguide with a rib height of 200 μm. Terahertz-wave generation from the GaP-crystal rib waveguides was demonstrated via collinear phase-matched difference-frequency mixing of near-infrared light. The terahertz output peak corresponding to the fundamental modes appeared around 0.75 THz for a 1-mm-wide rib waveguide. The position of the fundamental mode shifted to 1.32 THz for a 200-μm -wide waveguide, which is attributable to the two-dimensional confinement of the terahertz waves in the waveguide. The conversion efficiency was enhanced in the rib waveguide compared to that in both slab waveguides and bulk GaP crystals.

本文言語English
論文番号063102
ジャーナルJournal of Applied Physics
105
6
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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