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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 9 — May. 1, 2006
  • pp: 1178–1180

Propagation of spatially partially coherent emission from a vertical-cavity surface-emitting laser

Michael Peeters, Guy Verschaffelt, Johan Speybrouck, Hugo Thienpont, Jan Danckaert, Jari Turunen, and Pasi Vahimaa  »View Author Affiliations


Optics Letters, Vol. 31, Issue 9, pp. 1178-1180 (2006)
http://dx.doi.org/10.1364/OL.31.001178


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Abstract

Recently we observed 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 [Opt. Express 13, 9337 (2005)]. We study the influence of this partial spatial coherence on the propagation characteristics. The spatial decoherence manifests itself in the formation of a Gaussian far-field intensity distribution. We measure the transverse pulse profile from near to far field and see that the shape-invariant far-field regime starts after 140 μ m in the pulsed regime as opposed to several centimeters in continuous wave operation. This value matches quantitatively calculations made with a novel partially coherent propagation model without any free fitting parameters.

© 2006 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:
Coherence and Statistical Optics

History
Original Manuscript: January 9, 2006
Revised Manuscript: January 27, 2006
Manuscript Accepted: January 27, 2006

Citation
Michael Peeters, Guy Verschaffelt, Johan Speybrouck, Hugo Thienpont, Jan Danckaert, Jari Turunen, and Pasi Vahimaa, "Propagation of spatially partially coherent emission from a vertical-cavity surface-emitting laser," Opt. Lett. 31, 1178-1180 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-9-1178


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