Pumping of VECSELs using high quantum defect and broadband sources

A. H. Quarterman, K. G. Wilcox

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

Abstract

VECSEL slope efficiency can be expressed as a product of the quantum defect, the output coupling efficiency, and the quantum efficiency. This last factor represents the efficiency with which pump photons incident on the sample are converted into useful laser photons. Measurements of the quantum efficiency of a VECSEL sample using pump sources over a range of wavelengths and with a range of powers and areas on the sample can be used to characterise a sample and to inform decisions about the optimum pumping conditions to achieve maximum output power given a particular pump source and gain sample. This paper will describe the results of lasing and quantum efficiency measurements of a resonant, 11 quantum well gain sample when pumped using 808 nm, 532 nm and broadband pump sources over a range of spot sizes and incident powers. Conclusions will be drawn regarding VECSEL power scaling, sample design, and the prospects for optical pumping of high power VECSELs using non-laser sources.

Original languageEnglish
Title of host publicationVertical External Cavity Surface Emitting Lasers (VECSELs) V
EditorsMircea Guina
Place of PublicationBellingham
PublisherSPIE-International Society for Optical Engineering
Volume9349
ISBN (Print)9781628414394
DOIs
Publication statusPublished - 2015
EventSPIE Photonics West 2015: Vertical External Cavity Surface Emitting Lasers (VECSELs) V - Moscone Center, San Francisco, United States
Duration: 9 Feb 201510 Feb 2015
http://spie.org/x112639.xml

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume9349

Conference

ConferenceSPIE Photonics West 2015: Vertical External Cavity Surface Emitting Lasers (VECSELs) V
CountryUnited States
CitySan Francisco
Period9/02/1510/02/15
Internet address

Keywords

  • Semiconductor lasers
  • Solar energy
  • Solar lasers
  • VECSELs

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    Quarterman, A. H., & Wilcox, K. G. (2015). Pumping of VECSELs using high quantum defect and broadband sources. In M. Guina (Ed.), Vertical External Cavity Surface Emitting Lasers (VECSELs) V (Vol. 9349). [934904] (Proceedings of SPIE; Vol. 9349). SPIE-International Society for Optical Engineering. https://doi.org/10.1117/12.2079153