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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 250–256

Effects of nonlinear frequency pulling on the cavity phasing and the collective mode structure in phase-locked VCSEL arrays

Spilios Riyopoulos  »View Author Affiliations


JOSA B, Vol. 23, Issue 2, pp. 250-256 (2006)
http://dx.doi.org/10.1364/JOSAB.23.000250


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Abstract

Carrier and gain depletion due to cross-cavity interactions in actively coupled vertical-cavity surface-emitting laser arrays cause nonlinear-cavity frequency pulling. As a result the collective mode structure departs significantly from earlier studied linearly coupled eigenmodes. Theory and simulations find that array eigenmodes have uniform amplitude and density distribution over the interior array sites, accompanied with boundary-layer formation at the edges. Exact zero or π phasing among adjacent sites is achieved, depending on the coupling-strength sign. In contrast, in linearly coupled array modes neglecting cross-cavity hole burning, the phase difference cannot be exactly zero or π, yielding a sinusoidal amplitude distribution over the array sites. The exact zero phasing and the uniform intensity distribution in nonlinearly coupled arrays offer advantages for practical applications.

© 2006 Optical Society of America

OCIS Codes
(140.3290) Lasers and laser optics : Laser arrays
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 7, 2005
Revised Manuscript: July 13, 2005
Manuscript Accepted: September 7, 2005

Citation
Spilios Riyopoulos, "Effects of nonlinear frequency pulling on the cavity phasing and the collective mode structure in phase-locked VCSEL arrays," J. Opt. Soc. Am. B 23, 250-256 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-2-250

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