Cherenkov-phase-matched nonlinear optical detection and generation of terahertz radiation via GaAs with metal-coating | Zendy

Ramon delos Santos | Zendy; Shinpei Ozawa | Zendy; Valynn Katrine Mag-usara | Zendy; Syougo Azuma | Zendy; Anthony Tuico | Zendy; Vernalyn Copa | Zendy; Arnel Salvador | Zendy; Kohji Yamamoto | Zendy; Armando Somintac | Zendy; Kazuyoshi Kurihara | Zendy; Hideaki Kitahara | Zendy; Masahiko Tani | Zendy; Elmer Estacio | Zendy

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Cherenkov-phase-matched nonlinear optical detection and generation of terahertz radiation via GaAs with metal-coating

Author(s) -

Ramon delos Santos,

Shinpei Ozawa,

Valynn Katrine Mag-usara,

Syougo Azuma,

Anthony Tuico,

Vernalyn Copa,

Arnel Salvador,

Kohji Yamamoto,

Armando Somintac,

Kazuyoshi Kurihara,

Hideaki Kitahara,

Masahiko Tani,

Elmer Estacio

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.024980

Subject(s) - terahertz radiation , materials science , cherenkov radiation , optics , optoelectronics , coating , wafer , waveguide , wavelength , refractive index , detector , physics , composite material

Terahertz (THz) wave detection and emission via Cherenkov-phase-matched nonlinear optical effects at 1.55-μm optical wavelength were demonstrated using a GaAs with metal-coating (M-G-M) and bare GaAs as a reference sample in conjunction with a metallic tapered parallel-plate waveguide (TPPWG). The metal-coated GaAs is superior to the bare wafer both as a THz electro-optic detector and as an emitter. Significant improvements in the detection and emission efficiency were obtained by utilizing a metal-coating due to better confinement and lower loss of the THz waves propagating in the M-G-M compared with bare GaAs.

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