Widely tunable surface-emitted monochromatic terahertz-wave generation beyond the Reststrahlen band

Kyosuke Saito, Tadao Tanabe, Yutaka Oyama

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We proposed a surface-emitted THz-wave generation on the basis of difference frequency mixing in a GaP planar waveguide. By utilizing modal birefringence of fundamental TE and TM modes at telecom wavelengths in the GaP membrane waveguide, phase matching condition for the surface-emitted difference frequency mixing (SE-DFM) can be achieved. THz output power is enhanced near the phonon polariton resonance frequency owing to the strong coupling between the transverse optical (TO) phonon of GaP and THz radiation. The SE-DFM scheme can generate THz waves beyond the Reststrahlen band located between 11 and 12 THz, resulting in widely tunable THz wave generation. Our proposed broadband THz sources can be applicable for optically isotropic nonlinear optical materials such as GaAs and InP as well as GaP.

本文言語English
ページ(範囲)99-101
ページ数3
ジャーナルOptics Communications
335
DOI
出版ステータスPublished - 2015 1 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 物理化学および理論化学
  • 電子工学および電気工学

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