Large Square Resonator Laser With Quasi-Single-Mode Operation

Author

Hattori, Haroldo Takashi ; Liu, Danyu ; Tan, Hark Hoe ; Jagadish, Chennupati

Author_Institution

Sch. of Inf. Technol. & Electr. Eng., Univ. of New South Wales, Canberra, ACT

Volume

21

Issue

6

fYear

2009

fDate

3/15/2009 12:00:00 AM

Firstpage

359

Lastpage

361

Abstract

A large square resonator with a size of 8.3 mum can support many resonant modes, including whispering gallery modes. The inclusion of trenches at judicious node positions of a selected mode will not significantly affect this mode (i.e., its quality factor will not be significantly reduced) while the remaining modes will drastically lose power through radiation. Since most of the modes will not be able to overcome their radiation losses, only a single mode will resonate in the modified structure. We demonstrate, experimentally, single-mode operation of this device at a temperature of 4.2 K.

Keywords

III-V semiconductors; Q-factor; gallium arsenide; indium compounds; laser cavity resonators; micro-optics; quantum well lasers; whispering gallery modes; GaAs-In_0.2Ga_0.8As; large square resonator laser; microlasers; quality factor; quasisingle-mode operation; semiconductor lasers; size 8.3 mum; temperature 4.2 K; transverse-electric modes; transverse-magnetic modes; whispering gallery modes; Micro-lasers; semiconductor lasers; square resonators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.2011921

Filename

4768728