DocumentCode
778125
Title
Variable reflectance vertical cavity surface emitting lasers
Author
Lehman, A.C. ; Yamaoka, E.A. ; Willis, C.W. ; Choquette, K.D. ; Geib, K.M. ; Allerman, A.A.
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Illinois, IL
Volume
43
Issue
8
fYear
2007
Firstpage
460
Lastpage
461
Abstract
Singlemode operation in 850 nm vertical cavity surface emitting lasers is reported. The singlemode behaviour results from a radially-varying number of periods in the top distributed Bragg reflector mirror. At the centre of the device there are six additional quarter-wave layers (three periods) as compared to the edge. This provides higher mirror reflectivity to the fundamental mode without adding loss. Thus the top mirror geometry promotes singlemode operation of the laser from threshold to rollover
Keywords
distributed Bragg reflectors; surface emitting lasers; 850 nm; distributed Bragg reflector mirror; mirror reflectivity; singlemode operation; variable reflectance vertical cavity surface emitting lasers;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20070429
Filename
4155600
Link To Document