Mode structure of quantum dot semiconductor lasers

Y. Tanguy, J. Muszalski, J. Houlihan, G. Huyet, E. J. Pearce, P. M. Smowton, M. Hopkinson

Research output: Contribution to journalConference articlepeer-review


An analysis of the transverse and longitudinal mode structure of broad area quantum dot lasers emitting at 1060nm is presented. In particular, temperature is shown to play an important role in the stabilisation of the transverse mode structure of the devices. In addition, the investigation of the the interaction between these transverse modes, through the measurement of the spatial intensity correlation, shows that the laser retains some modal properties in the unstable regime. Finally, measurements of spectral correlations between longitudinal mode groups display a strong dependency on their respective transverse mode structures indicating the importance of spatial overlap.

Original languageEnglish
Article number61
Pages (from-to)518-525
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2004
Externally publishedYes
EventAstronomical Structures and Mechanisms Technology - Glasgow, United Kingdom
Duration: 21 Jun 200422 Jun 2004


  • Broad-area lasers
  • Quantum dots
  • Semiconductor lasers
  • Spatio-temporal instabilities
  • Transverse mode


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