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Optics Express

Optics Express

  • Editor: Micha
  • Vol. 13, Iss. 23 — Nov. 14, 2005
  • pp: 9337–9345

Spatial decoherence of pulsed broad-area vertical-cavity surface-emitting lasers

Michael Peeters, Guy Verschaffelt, Hugo Thienpont, Shyam K. Mandre, Ingo Fischer, and Martin Grabherr  »View Author Affiliations

Optics Express, Vol. 13, Issue 23, pp. 9337-9345 (2005)

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We report a strong reduction of spatial coherence of the emission of large aperture vertical-cavity surface-emitting lasers when they are driven by microsecond electrical pulses. We give evidence that this is due to a breakdown of the modal emission of these lasers. The spatial decoherence manifests itself in the formation of a Gaussian far field intensity distribution. The coherence radius we extract is 1.4 micrometer under these operating conditions, irrespective of the Fresnel number of the vertical-cavity surface-emitting laser. Finally, the spatial coherence properties can be varied by changing the pulse duration or pulse amplitude.

© 2005 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.4070) Coherence and statistical optics : Modes
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers

ToC Category:
Research Papers

Original Manuscript: June 10, 2005
Revised Manuscript: September 29, 2005
Published: November 14, 2005

Michael Peeters, Guy Verschaffelt, Hugo Thienpont, Shyam Mandre, Ingo Fischer, and Martin Grabherr, "Spatial decoherence of pulsed broad-area vertical-cavity surface-emitting lasers," Opt. Express 13, 9337-9345 (2005)

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