Towards filament free semiconductor lasers

John McInerney, Peter O'Brien, Peter M. W. Skovgaard, Mark Mullane, John Houlihan, Eamonn O'Neill, Jerome V. Moloney, Robert A. Indik

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


We outline physical models and simulations for suppression of self-focusing and filamentation in large aperture semiconductor lasers. The principal technical objective is to generate multi-watt CW or quasi-CW outputs with nearly diffraction limited beams, suitable for long distance free space transmission, focusing to small spots or coupling to single mode optical fibers. The principal strategies are (a) optimisation of facet damage thresholds, (b) reduction of the linewidth enhancement factor which acts as the principal nonlinear optical coefficient, and (c) design of laterally profiled propagation structures in lasers and amplifiers which suppress lateral reflections.
Original languageEnglish
Title of host publicationProceedings of SPIE 3944
Publication date2000
Publication statusPublished - 2000
EventPhotonics West 2000 - San José, USA
Duration: 1 Jan 2000 → …


ConferencePhotonics West 2000
CitySan José, USA
Period01/01/2000 → …

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