A proposal of broad-bandwidth vertical-cavity laser amplifier

Author

Lim, S.F. ; Chang-Hasnain, C.J.

Author_Institution

Edward L. Ginzton Lab., Stanford Univ., CA, USA

Volume

7

Issue

11

fYear

1995

Firstpage

1240

Lastpage

1242

Abstract

We propose a generic vertical-cavity amplifier (VCA) using a coupled-cavity design to broaden the bandwidth. Calculations are made for cavities with GaAs-AlAs and GaAs-Al/sub x/O/sub 2/ distributed Bragg reflectors (DBR). We found that at reasonable pumping levels the VCA increased the bandwidth by 85% (GaAs-AlAs) to 500% (GaAs-Al/sub x/O/sub 2/) as compared to a simple two-mirror structure similar to vertical-cavity surface-emitting lasers. In particular, the GaAs-AlAs VCA shows a bandwidth of 2 nm at 6-dB signal gain, while the GaAs-Al/sub x/O/sub 2/ VCA demonstrates a 5-nm bandwidth at 6-dB signal gain with no ripple at required single-pass power gain of /spl sim/2-2.5%. Furthermore, as large as 30-nm bandwidth in a lossless bandpass filter can be obtained.<>

Keywords

distributed Bragg reflector lasers; laser cavity resonators; quantum well lasers; 6 dB; GaAs-Al/sub x/O/sub 2/ distributed Bragg reflectors; GaAs-AlAs; GaAs-AlAs distributed Bragg reflectors; GaAs-AlO; bandwidth; broad-bandwidth vertical-cavity laser amplifier; coupled-cavity design; generic vertical-cavity amplifier; lossless bandpass filter; pumping levels; signal gain; single-pass power gain; Bandwidth; Distributed Bragg reflectors; Fabry-Perot; Mirrors; Optical amplifiers; Optical coupling; Proposals; Semiconductor optical amplifiers; Surface emitting lasers; Vertical cavity surface emitting lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.473458

Filename

473458