Analysis of optical scattering losses in vertical-external-cavity surface-emitting lasers

Dalia Al Nakdali, Mohammad Khaled Shakfa, Bernd Heinen, Bernardette Kunert, Wolfgang Stolz, Stephan W. Koch, Jörg Hader, Jerome V. Moloney, Arash Rahimi-Iman, Martin Koch

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We report on an analysis of optical surface-scattering losses in vertical-external-cavity surface-emitting lasers. In this study, a laser chip with enhanced surface roughness compared with a high-quality chip is employed in order to allow for investigation of a scattering loss component described in theoretical considerations. A simple model for the extraction of the laser chip’s thermal resistance from experimental input–output characteristics based on thermal roll-over is expanded with respect to a non-thermal component of losses. Thereby, we demonstrate good agreement of experimental data with theoretical modeling when taking into account a power loss component proportional to an optical surface-scattering-loss coefficient in relation to photon out-coupling rates.

Original languageEnglish (US)
Pages (from-to)41-46
Number of pages6
JournalApplied Physics B: Lasers and Optics
Volume120
Issue number1
DOIs
StatePublished - Jul 10 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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