A wavelength tuneable 2-ps pulse VECSEL

Oliver J. Morris, Keith G. Wilcox, C. Robin Head, Andrew P. Turnbull, Peter J. Mosley, Adrian H. Quarterman, Hani J. Kbashi, Ian Farrer, Harvey E. Beere, David A. Ritchie, Anne C. Tropper.

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

14 Citations (Scopus)


We report a mode-locked Vertical-External-Cavity Surface-Emitting Laser (VECSEL) that exhibits 13.7 nm of tuning around a centre wavelength of 1042 nm. The wavelength tuning is achieved by incorporating an uncoated, 25 μm thick, fused silica etalon into the cavity of the laser at Brewster's angle. The etalon is then tilted with respect to the cavity axis. The etalon has a calculated free spectral range of 14 nm at normal incidence. The repetition rate of the laser is measured to be 1.88 GHz. The pulse duration, averaged over the tuning range, is 1.9 ps corresponding to a mean time bandwidth product of 0.46. For a sech2 pulse this is 1.46 times larger than the transform limit. The average power of the laser does not fall below 2.6 mW and, over the tuning range, averages 3.5 mW. With appropriate amplification, such a laser would be highly suited to the generation of heralded single photons in photonic crystal fibre.

Original languageEnglish
Title of host publicationVertical External Cavity Surface Emitting Lasers (VECSELs) II
Publication statusPublished - 26 Mar 2012
EventVertical External Cavity Surface Emitting Lasers (VECSELs) II - San Francisco, CA, United States
Duration: 23 Jan 201224 Jan 2012

Publication series

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


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


  • Four wave mixing
  • Heralded single photon
  • Mode-locked
  • Vecsel
  • Wavelength tuneable

ASJC Scopus subject areas

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


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