High-Q resonant modes in a quasi-three dimensional photonic crystal microcavity

Author

Ito, M. ; Iwamoto, S. ; Arakawa, Y.

Author_Institution

Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan

Volume

1

fYear

2003

fDate

27-28 Oct. 2003

Firstpage

291

Abstract

A novel microcavity structure constructed in a quasi-3D photonic crystal (PhC) with a 2D PhC structure and 1D distributed Bragg reflectors (DBRs) is proposed and designed. The FDTD analysis demonstrates more than 250 times enhancement of a Purcell factor and a Q-factor compared to conventional 2D PhC slab microcavities without the cost of a mode volume. The Q-factor in the vertical direction excesses 30000 whereas that of conventional air-bridged PhC cavity is smaller than 100. Based on the Fourier-space analysis, it is pointed out that the enhancement is attributed to strong confinement of light in vertical direction by DBRs. This structure would be fabricated by means of relatively easy top-down process because it requires only one-step etching.

Keywords

Fourier transform optics; Q-factor; distributed Bragg reflectors; finite difference time-domain analysis; microcavities; optical design techniques; photonic crystals; 1D distributed Bragg reflectors; 2D photonic crystal structure; FDTD analysis; Fourier-space analysis; Purcell factor; Q-factor; etching; high-Q resonant modes; photonic crystal microcavity; quasithree dimensional photonic crystal; top-down process; Costs; Distributed Bragg reflectors; Etching; Finite difference methods; Microcavities; Photonic crystals; Q factor; Resonance; Slabs; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE

ISSN

1092-8081

Print_ISBN

0-7803-7888-1

Type

conf

DOI

10.1109/LEOS.2003.1251752

Filename

1251752