Passive mode-locking in semiconductor lasers with saturable absorbers bandgap shifted through quantum well intermixing

Pusino, V. , Strain, M. J. and Sorel, M. (2014) Passive mode-locking in semiconductor lasers with saturable absorbers bandgap shifted through quantum well intermixing. Photonics Research, 2(6), pp. 186-189. (doi:10.1364/PRJ.2.000186)

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Abstract

Passive mode-locking in semiconductor lasers in a Fabry–Perot configuration with a bandgap blueshift applied to the saturable absorber (SA) section has been experimentally characterized. For the first time a fully post-growth technique, quantum well intermixing, was adopted to modify the material bandgap in the SA section. The measurements showed not only an expected narrowing of the pulse width but also a significant expansion of the range of bias conditions generating a stable train of optical pulses. Moreover, the pulses from lasers with bandgap shifted absorbers presented reduced chirp and increased peak power with respect to the nonshifted case.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and Pusino, Mr Vincenzo and Strain, Dr Michael
Authors: Pusino, V., Strain, M. J., and Sorel, M.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Photonics Research
Publisher:Optical Society of America
ISSN:2327-9125
ISSN (Online):2327-9125
Copyright Holders:Copyright © 2014 Chinese Laser Press
First Published:First published in Photonics Research 2(6):186-189
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
518721Engineering and Physical Sciences Doctoral Training Grant 2009-13Mary GoodmanEngineering & Physical Sciences Research Council (EPSRC)EP/P504937/1VICE PRINCIPAL RESEARCH & ENTERPRISE