Influence of the spatial pump distribution on the performance of high power vertical-external-cavity surface-emitting lasers

A. Chernikov, J. Herrmann, Maik A Scheller, M. Koch, B. Kunert, W. Stolz, S. Chatterjee, Stephan W Koch, T. L. Wang, Y. Kaneda, J. M. Yarborough, J. Hader, J. V. Moloney

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The performance of a 1040 nm vertical-external-cavity surface-emitting laser is studied as function of the size and shape of the pumped area. The input-output characteristics of the device are monitored while simultaneously tracking the temperature in the active region. It is shown that the pump spot shape plays a crucial role in optimizing the laser output. Improvements up to a factor of 5 are found for a super-Gaussian in comparison to the standard Gaussian shape. For the large pump-spot sizes needed for high output powers, it turns out that the power-scalability breaks down due to the suppressed lateral heat flow.

Original languageEnglish (US)
Article number191110
JournalApplied Physics Letters
Volume97
Issue number19
DOIs
StatePublished - Nov 8 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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