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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 14 — May. 10, 2013
  • pp: 3221–3228

Spatial coherence of broad-area laser diodes

Henri Partanen, Jani Tervo, and Jari Turunen  »View Author Affiliations


Applied Optics, Vol. 52, Issue 14, pp. 3221-3228 (2013)
http://dx.doi.org/10.1364/AO.52.003221


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Abstract

We model the spatial coherence of broad-area laser diodes (BALDs) by representing the mutual intensity as superpositions of individually fully coherent but mutually uncorrelated fields. Consideration of spectroscopic modal structure measurements and intensity-based mode recovery shows that the standard Mercer-type coherent-mode expansion can lead to unsatisfactory results for real BALDs. However, we show that a so-called shifted elementary-field method provides a sufficiently accurate tool for spatial coherence and propagation modeling even if the modal structure of the BALD is severely distorted.

© 2013 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.4070) Coherence and statistical optics : Modes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: February 11, 2013
Manuscript Accepted: April 5, 2013
Published: May 3, 2013

Citation
Henri Partanen, Jani Tervo, and Jari Turunen, "Spatial coherence of broad-area laser diodes," Appl. Opt. 52, 3221-3228 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-14-3221

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