High brightness semiconductor lasers with reduced filamentation

John McInerney, Peter O'Brien, Peter Skovgaard, Mark Mullane, John Houlihan, Eamonn O'Neill

Research output: Contribution to journalConference articlepeer-review


A combined assault on the linear, quadratic, gaussian and lorentzian profiles to suppress filamentation and high order transverse modes of high brightness semiconductor lasers is described. A standard broad area laser and a linearly or nonlinearly flared laser in which the current stripe is shaped to overlap the spatial extent of the propagating light are used. In these devices, the desired fundamental transverse mode cannot consume carriers at the edges of the active medium, resulting in high local carrier densities which modulated the gain and index spatially and cause various instabilities. Transverse current profiles are generated by incorporating a thick current spreading layer and using standard lithography.

Original languageEnglish
Pages (from-to)78-79
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 12th Annual Meeting IEEE Lasers and Electro-Optics Society (LEOS'99) - San Francisco, CA, USA
Duration: 08 Nov 199911 Nov 1999


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