Transient propagation of optical beams in active media |
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Authors: | F P Mattar |
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Institution: | (1) Department of Physics and Astronomy, University of Rochester, Rochester, N.Y.;(2) Department of Physics, University of Montreal, Montreal, Canada |
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Abstract: | The coherent interaction of short optical pulses with a nonlinear active resonant medium is calculated. The rigorous and self-consistent
solution of the coupled nonlinear Maxwell-Bloch equations including transverse and time-dependent phase variations predicts
the onset on an on-resonance self-focusing that agrees very well with a previous perturbation treatment and with recent experiments
in sodium and neon. The formation of this dynamic self-action effect is elucidated as being due to the combined effects of
diffraction and the inertial response of the active media.
Accuracy and computational economy are achieved simultaneously by redistributing the computational grid points according to
the physical requirements of the problem. Evenly spaced computational grids are related to variable grids in physical space
by a range of stretching and rezoning techniques including adaptive rezoning where the coordinate transformation is determined
by the actual physical solution.
Work supported in part by the Mobil Oil Corporation and the Office of Naval Research. |
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Keywords: | 42 10 42 65 |
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