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Zeghuzi, Anissa [Author]; Wünsche, Hans-Jürgen [Author]; Wenzel, Hans [Author]; Radziunas, Mindaugas [Author]; Fuhrmann, Jürgen [Author]; Klehr, Andreas [Author]; Bandelow, Uwe [Author]; Knigge, Andrea [Author]

Time-dependent simulation of thermal lensing in high-power broad-area semiconductor lasers

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  • Media type: Text; Report; E-Book
  • Title: Time-dependent simulation of thermal lensing in high-power broad-area semiconductor lasers
  • Contributor: Zeghuzi, Anissa [Author]; Wünsche, Hans-Jürgen [Author]; Wenzel, Hans [Author]; Radziunas, Mindaugas [Author]; Fuhrmann, Jürgen [Author]; Klehr, Andreas [Author]; Bandelow, Uwe [Author]; Knigge, Andrea [Author]
  • Published: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2019
  • Language: English
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.2634
  • Keywords: 35Q60 ; 78-04 ; 81Q37 ; 78A60 ; 35Q79 ; 70K70 ; article ; Broad-area laser -- heat flow -- pulsed laser operation -- traveling-wave model -- thermal lensing -- temperature fluctuation
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: We propose a physically realistic and yet numerically applicable thermal model to account for short and long term self-heating within broad-area lasers. Although the temperature increase is small under pulsed operation, a waveguide that is formed within a few-ns-long pulse can result in a transition from a gain-guided to an index-guided structure, leading to near and far field narrowing. Under continuous wave operation the longitudinally varying temperature profile is obtained self-consistently. The resulting unfavorable narrowing of the near field can be successfully counteracted by etching trenches.
  • Access State: Open Access