Waveguide coupled air-slot photonic crystal nanocavity for optomechanics

Author

Shimizu, Wataru ; Nagai, N. ; Hirakawa, Keisuke ; Nomura, M.

Author_Institution

Inst. of Ind. Sci., Univ. of Tokyo, Tokyo, Japan

fYear

2013

fDate

June 30 2013-July 4 2013

Firstpage

1

Lastpage

2

Abstract

We investigate a structure consisting of two parallel GaAs membranes with an air-slot type photonic crystal nanocavity, which is designed to achieve efficient optomechanical coupling. The structure shows a large theoretical optomechanical coupling factor of ~990 GHz/nm. We designed, fabricated and performed optical characterization of a system consisting of a grating coupler, a photonic crystal waveguide, and a nanocavity (1540 nm). About 2% of the input power is diffracted, guided, coupled to the cavity mode, and detected by a detection system with a microscope objective lens with an NA = 0.65.

Keywords

III-V semiconductors; diffraction gratings; gallium arsenide; lenses; membranes; nanophotonics; nanostructured materials; optical couplers; optical design techniques; optical fabrication; optical waveguides; photonic crystals; GaAs; cavity mode; detection system; grating coupler; input power; microscope objective lens; optical characterization; parallel membranes; theoretical optomechanical coupling factor; waveguide coupled air-slot photonic crystal nanocavity; wavelength 1540 nm; Cavity resonators; Couplers; Couplings; Measurement by laser beam; Optical device fabrication; Optical waveguides; Photonic crystals;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on

Conference_Location

Kyoto

Type

conf

DOI

10.1109/CLEOPR.2013.6600392

Filename

6600392