Wavelength-tunable asymmetric cladding ridge-waveguide distributed Bragg reflector lasers with very narrow linewidth

Author

Smith, G.M. ; Hughes, J.S. ; Lammert, R.M. ; Osowski, M.L. ; Papen, G.C. ; Verdeyen, J.T. ; Coleman, J.J.

Author_Institution

Microelectron. Lab., Illinois Univ., Urbana, IL, USA

Volume

32

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

1225

Lastpage

1229

Abstract

Narrow-linewidth ridge-waveguide distributed Bragg reflector (DBR) lasers with asymmetric cladding are demonstrated. This design requires only a single epitaxial growth of an asymmetric cladding laser structure while the grating and the ridge waveguide are fabricated after the growth. These lasers have a threshold current as low as 9 mA, a slope efficiency of 0.3 W/A, and a T/sub 0/ of 100 K. Wavelength tuning of 8 nm is achieved by current injection heating of the DBR section. A spectral-linewidth minimum of 36 kHz is achieved at an output power of 20 mW and is limited by linewidth rebroadening due to current injection in both the gain section and DBR section.

Keywords

claddings; distributed Bragg reflector lasers; laser tuning; optical fabrication; semiconductor growth; semiconductor lasers; spectral line breadth; vapour phase epitaxial growth; waveguide lasers; 100 K; 20 mW; 9 mA; DBR lasers; DBR section; asymmetric cladding; asymmetric cladding laser structure; current injection; current injection heating; design requires; gain section; linewidth rebroadening; output power; ridge waveguide; ridge-waveguide distributed Bragg reflector lasers; single epitaxial growth; slope efficiency; spectral-linewidth minimum; threshold current; wavelength tuning; wavelength-tunable asymmetric cladding; Distributed Bragg reflectors; Distributed feedback devices; Epitaxial growth; Etching; Gratings; Laser feedback; Laser tuning; Optical device fabrication; Semiconductor lasers; Waveguide lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.517022

Filename

517022