Title: Parameterisation of an acousto-optic programmable dispersive filter for closed-loop learning experiments
Authors: Form, Nicholas T ×
Burbidge, Robert
Ramon, Jan
Whitaker, Benjamin J #
Issue Date: Jan-2008
Series Title: Journal of Modern Optics vol:55 issue:1 pages:197-209
Abstract: A representation of the search space in optical pulse shaping problems employing an acousto-optic
programmable dispersive filter (AOPDF) is presented for use in closed-loop learning experiments where the
optimal spectral phase function to some control problem is determined by an iterative learning algorithm. The
representation allows the algorithm to select a value for the optical chirp at each frequency control point such
that only acoustic grating functions which preserve the spectrum of the shaped pulses are tested. The limits of
this space with respect to the rate of applied optical chirp, optical bandwidth and acoustic power are examined
and tested through diffraction efficiency studies performed using a commercial AOPDF. The main benefits of
this representation are the elimination of undesirable frequency mixing effects, reduction of diffraction
efficiency variation between arbitrary pulse shapes and faster convergence of the evolutionary algorithm.
ISSN: 0950-0340
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Informatics Section
× corresponding author
# (joint) last author

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