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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 16, Iss. 6 — Jun. 1, 1999
  • pp: 961–965

Gain-guiding effects in transient Raman amplifiers

Jianqiu Xu and Qihong Lou  »View Author Affiliations

JOSA B, Vol. 16, Issue 6, pp. 961-965 (1999)

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A nonorthogonal theory is used to study the non-Hermitian character of the excess noise in gain-guided transient Raman amplifiers. We calculated the output of the gain-guided transient Raman scattering based on a nonorthogonal mode expansion. We found that the excess noise in a transient gain-guided amplifier increases nonlinearly from 0 (and the Petermann factor nonlinearly from 1) and that the evolution depends mainly on the integrated energy of the pump laser pulse.

© 1999 Optical Society of America

OCIS Codes
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.5650) Nonlinear optics : Raman effect

Jianqiu Xu and Qihong Lou, "Gain-guiding effects in transient Raman amplifiers," J. Opt. Soc. Am. B 16, 961-965 (1999)

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