Strategies for power scaling VECSELs

Tsuei Lian Wang, Yushi Kaneda, Jorg Hader, Jerome V. Moloney, Bernardette Kunert, Wolfgang Stolz, Stephan W. Koch

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

5 Scopus citations


Strategies for power scaling VECSELs, including improving thermal management, increasing the quantum well gain/micro-cavity detuning that increases the threshold but increases roll-over temperature, and double-passing the excess pump via reflection from a metalized reflector at the back of a transparent distributed Bragg reflector (DBR) were studied. The influence of the heat spreader thickness and the pump profile on the temperature rise inside the active region was investigated using commercial finite element analysis software. Improvement was observed in optical efficiency of the VECSEL devices with a transparent DBR by double passing the pump light. Higher dissipated power at maximum output power was found in devices with larger spectral detuning between the quantum well gain and the micro-cavity detuning.

Original languageEnglish (US)
Title of host publicationVertical External Cavity Surface Emitting Lasers (VECSELs) II
StatePublished - 2012
EventVertical External Cavity Surface Emitting Lasers (VECSELs) II - San Francisco, CA, United States
Duration: Jan 23 2012Jan 24 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherVertical External Cavity Surface Emitting Lasers (VECSELs) II
Country/TerritoryUnited States
CitySan Francisco, CA


  • Detuning
  • Double-pass pump
  • Power scaling
  • Thermal management

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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