Applied Physics B

, 83:189

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

Authors

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

DOI: 10.1007/s00340-006-2151-z

Cite this article as:
Kemp, A., Maclean, A., Hastie, J. et al. Appl. Phys. B (2006) 83: 189. doi:10.1007/s00340-006-2151-z

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.

Copyright information

© Springer-Verlag 2006