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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 8 — Apr. 14, 2008
  • pp: 5565–5571

Nonlinear gain amplification due to two-wave mixing in a broad-area semiconductor amplifier with moving gratings

Mingjun Chi, Jean-Pierre Huignard, and Paul Michael Petersen  »View Author Affiliations

Optics Express, Vol. 16, Issue 8, pp. 5565-5571 (2008)

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The two-wave mixing in a broad-area semiconductor amplifier with moving gratings is investigated theoretically, where a pump beam and a signal beam with different frequencies are considered, thus both a moving phase grating and a moving gain grating are induced in the amplifier. The coupled-wave equations of two-wave mixing are derived based on the Maxwell’s wave equation and rate equation of the carrier density. The analytical solutions of the coupled-wave equations are obtained in the condition of small signal when the total intensity is far below the saturation intensity of the amplifier. The results show that the optical gain of the amplifier is affected by both the moving phase grating and the moving gain grating, and there is energy exchange between the pump and signal beams. Depending on the moving direction of the gratings and the anti-guiding parameter, the optical gain may increase or decrease due to the two-wave mixing.

© 2008 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.7070) Nonlinear optics : Two-wave mixing

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 15, 2008
Revised Manuscript: March 28, 2008
Manuscript Accepted: March 31, 2008
Published: April 4, 2008

Mingjun Chi, Jean-Pierre Huignard, and Paul Michael Petersen, "Nonlinear gain amplification due to two-wave mixing in a broad-area semiconductor amplifier with moving gratings," Opt. Express 16, 5565-5571 (2008)

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