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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 9 — May. 2, 2005
  • pp: 3340–3347

Guiding of laser modes based on self-pumped four-wave mixing in a semiconductor amplifier

Paul M. Petersen, Eva Samsøe, Søren Blaaberg Jensen, and Peter E. Andersen  »View Author Affiliations

Optics Express, Vol. 13, Issue 9, pp. 3340-3347 (2005)

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We propose that self-pumped degenerate four-wave mixing may be used to produce novel diode laser systems where lasing is based on non-linear guiding of the laser beams inside the active semiconductor. The fundamental process responsible for the interaction is spatial hole burning in semiconductor amplifiers. The gain and index gratings created by the modulation of the carrier density in the active gain medium lead to selective amplification of one spatial mode and suppression of all other modes. This mechanism allows the laser system to be operated far above its threshold with an almost diffraction limited output beam. The third order nonlinear susceptibility of the non-linear material, which determines the strength of the induced gratings, depends on the angle between the interacting beams in the four-wave mixing configuration. It is shown theoretically that a narrow range of angles exist where the induced gratings are strong and where mode suppression of higher order spatial modes are obtained simultaneously. Experimental evidence sustaining these findings is given.

© 2005 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3430) Lasers and laser optics : Laser theory
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing

ToC Category:
Research Papers

Original Manuscript: March 22, 2005
Revised Manuscript: April 15, 2005
Published: May 2, 2005

Paul Petersen, Eva Samsøe, Søren Jensen, and Peter Andersen, "Guiding of laser modes based on self-pumped four-wave mixing in a semiconductor amplifier," Opt. Express 13, 3340-3347 (2005)

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