Cherenkov-phase-matched nonlinear optical detection and generation of terahertz radiation via GaAs with metal-coating.
Opt Express
; 24(22): 24980-24988, 2016 Oct 31.
Article
em En
| MEDLINE
| ID: mdl-27828438
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.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Opt Express
Ano de publicação:
2016
Tipo de documento:
Article