Sensitivity of grating-coupled surface emitters to length-induced phase variations

Author

Hardy, Amos ; Mehuys, David ; Waarts, Robert G. ; Welch, David F. ; Streifer, William

Author_Institution

Spectra Diode Lab. Inc., San Jose, CA, USA

Volume

26

Issue

9

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1467

Lastpage

1475

Abstract

The longitudinal mode structure of a two-gain section, three-grating surface emitting laser is studied as a function of length-induced phase variations. It is found that several mode hops occur in the course of changing the length of one of the gain sections by one grating period. Although the number of mode hops can be reduced by optimizing the design, stable, single-mode laser operation appears to require control of the optical length of each gain and grating section to better than one wavelength

Keywords

diffraction gratings; laser modes; semiconductor laser arrays; sensitivity; gain section length; grating period; grating section length; grating-coupled surface emitters; length-induced phase variations; longitudinal mode structure; mode hops; optical length; sensitivity; single-mode laser operation; three-grating surface emitting laser; two-gain section; wavelength comparable lengths; Gratings; Laser feedback; Laser modes; Optical control; Optical pumping; Optical refraction; Optical sensors; Optical surface waves; Optical variables control; Surface emitting lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.102623

Filename

102623