Cherenkov-Phase-Matched Nonlinear Optical Detection and Generation of Terahertz Radiation via GaAs With Metal-Coating

Authors

Ramon M. Delos Santos, Ateneo de Manila UniversityFollow
Shinpei Ozawa, University of Fukui
Valynn Magusara, University of Fukui
Syougo Azuma, University of Fukui
Anthony Tuico, University of the Philippines Diliman
Vernalyn Copa, University of the Philippines Diliman
Arnel Salvador, University of the Philippines Diliman
Kohji Yamamoto, University of Fukui
Armando Somintac, University of the Philippines Diliman
Kazuyoshi Kurihara, University of Fukui
Hideaki Kitahara, University of Fukui
Masahiko Tani, University of Fukui
Elmer Estacio, University of the Philippines Diliman

Document Type

Article

Publication Date

10-30-2016

Abstract

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.

Recommended Citation

Santos, R. D., Ozawa, S., Mag-usara, V., Azuma, S., Tuico, A., Copa, V., Salvador, A., Yamamoto, K., Somintac, A., Kurihara, K., Kitahara, H., Tani, M., & Estacio, E. (2016). Cherenkov-phase-matched nonlinear optical detection and generation of terahertz radiation via GaAs with metal-coating. Optics Express, 24(22), 24980–24988. https://doi.org/10.1364/OE.24.024980