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Proceedings Paper

Theory of mode-locking using phase-sensitive amplification for saturable absorption
Author(s): Simon Hachey; Christopher R. Jones; J. Nathan Kutz
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Paper Abstract

An averaged evolution equation is presented and its dynamics studied for a mode-locked laser where the intensitydiscrimination (saturable absorption) in the cavity is provided by phase-senstitive amplification. The phasesensitive amplifier acts as a phase-filter for selecting the specific intensity dependent phase-rotation of the modelocked pulse that locks the phase to the amplifier pump phase. The resulting averaged equation is a Swift- Hohenberg type model which is a fourth-order diffusion equation with cubic-quintic nonlinearities. Additionally, the governing evolution has a new linear growth term which couples to the nonlocal cavity energy. This parameter is a standard bifurcation parameter in Swift-Hohenberg models and is controlled by the cavity saturable gain. Such a modification to the governing evolution is the first of its kind to be considered theoretically in the context of the Swift-Hohenberg equation, and its significant impact on the mode-locked pulse dynamics and multi-pulsing behavior is explored.

Paper Details

Date Published: 4 August 2009
PDF: 8 pages
Proc. SPIE 7386, Photonics North 2009, 73862T (4 August 2009); doi: 10.1117/12.845099
Show Author Affiliations
Simon Hachey, Univ. of Washington (United States)
Christopher R. Jones, Univ. of Washington (United States)
J. Nathan Kutz, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 7386:
Photonics North 2009
Réal Vallée, Editor(s)

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