Carrier-dependent nonlinear lens in a VECSEL gain medium

A. H. Quarterman, E. A. Shaw, K. G. Wilcox

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vertical-external-cavity surface-emitting lasers (VECSELs) modelocked using saturable absorbers have become an established means of generating few hundred femtosecond optical pulses at Watt-level output powers and gigahertz repetition rates [1,2]. More recently there have been reports of self-modelocked VECSELs which do not use saturable absorbers, instead relying on nonlinear lensing in the laser gain sample as the necessary intensity dependent effect [3]. Design of these lasers is challenging as calculating the value of the nonlinear refractive index of a VECSEL gain sample is made complex by the fact that several physical effects contribute to it, including changes in carrier density, carrier thermalization, the Kerr effect and others. Given this complexity, calculation of accurate values for use in laser design is a difficult problem.
Original languageEnglish
Title of host publicationProceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015
PublisherOptical Society of America
ISBN (Electronic)9781467374750
Publication statusPublished - 2015
Event2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015 - Munich, Germany
Duration: 21 Jun 201525 Jun 2015

Publication series

NameOptics InfoBase Conference Papers

Conference

Conference2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015
Country/TerritoryGermany
CityMunich
Period21/06/1525/06/15

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