Towards filament-free semiconductor lasers

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

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


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) optimization 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
Pages (from-to)I/-
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2000
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices VIII - San Jose, CA, USA
Duration: 24 Jan 200028 Jan 2000


Dive into the research topics of 'Towards filament-free semiconductor lasers'. Together they form a unique fingerprint.

Cite this