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Proceedings Paper

Revisiting the physics of mode locking in lasers
Author(s): Auro M. Perego; Franco Prati; Germán J. de Valcárcel
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Paper Abstract

We present a way to describe mode locking through a master equation, derived from the laser Maxwell-Bloch equations, which take into account coherence in light-gain interaction. Our derivation shows that gain evolution on the fast time scale of the laser pulses must be considered, unlike in Haus master equation. A key point in the derivation is to use an improved adiabatic elimination of the medium polarization which leads to the appearance of the fast evolution of gain. Numerical simulations with parameters suitable for a semiconductor laser show marked differences with respect to Haus master equation in the shape, height and width of the pulses. These effects, which are related to the fast varying part of the gain, are more pronounced the longer is the cavity.

Paper Details

Date Published: 2 May 2014
PDF: 6 pages
Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 91340D (2 May 2014); doi: 10.1117/12.2051671
Show Author Affiliations
Auro M. Perego, Univ. degli Studi dell'Insubria (Italy)
Univ. de València (Spain)
Franco Prati, Univ. degli Studi dell'Insubria (Italy)
Germán J. de Valcárcel, Univ. de València (Spain)

Published in SPIE Proceedings Vol. 9134:
Semiconductor Lasers and Laser Dynamics VI
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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