Applied Physics B

, 83:189

Thermal lensing, thermal management and transverse mode control in microchip VECSELs

  • A.J. Kemp
  • A.J. Maclean
  • J.E. Hastie
  • S.A. Smith
  • J.-M. Hopkins
  • S. Calvez
  • G.J. Valentine
  • M.D. Dawson
  • D. Burns
Article

Abstract

Finite-element analysis is used to explore the practicalities and power-scaling potential of quasi-monolithic microchip vertical-external-cavity surface-emitting lasers: thermal lensing and its implications for transverse mode control are emphasised. A comparison is made between the use of sapphire and diamond heat spreaders. The experimental characterisation of an InGaAs/sapphire microchip VECSEL is presented as an exemplar system and the factors affecting slope efficiency, threshold and output power roll-over are examined. By comparing experimental measurements with the finite-element model, the key role of thermal lensing in transverse mode control is demonstrated.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • A.J. Kemp
    • 1
  • A.J. Maclean
    • 1
  • J.E. Hastie
    • 1
  • S.A. Smith
    • 1
  • J.-M. Hopkins
    • 1
  • S. Calvez
    • 1
  • G.J. Valentine
    • 1
  • M.D. Dawson
    • 1
  • D. Burns
    • 1
  1. 1.Institute of PhotonicsUniversity of StrathclydeGlasgowUK

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