Modal Gain of 2.4-um InGaAsSb–AlGaAsSb Complex-Coupled Distributed-Feedback Lasers

Download
  1. (PDF, 277 KB)
  2. Get@NRC: Modal Gain of 2.4-um InGaAsSb–AlGaAsSb Complex-Coupled Distributed-Feedback Lasers (Opens in a new window)
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleIEEE PHOTONICS TECHNOLOGY LETTERS
Volume21
Issue20
Pages15321534; # of pages: 3
SubjectDistributed-feedback (DFB) lasers; semiconductor lasers; GaSb; InGaAsSb
AbstractHigh-resolution spectroscopy was used to examine gain characteristics of Cr-grating complex-coupled distributed-feedback (DFB) lasers near 2.4 um. The single-mode lasers contain InGaAsSb–AlGaAsSb active regions grown by molecular beam epitaxy on GaSb. Modal gain was extracted from the measured amplified spontaneous emission spectra and compared with reference Fabry–Pérot lasers. The material gain is similar in both cases, having a value near 1300 cm-1, while the internal losses are quite different. The DFBs have an additional loss, approximately equal to the lateral Cr grating coupling coefficient. This indicates a fundamental performance limitation for complex-coupled DFBs.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedYes
NPARC number17401004
Export citationExport as RIS
Report a correctionReport a correction
Record identifier30453b3a-d750-4ffa-bb49-7a7f53c86d01
Record created2011-03-26
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)