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Random laser dynamics
Simulation of random laser dynamics
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Archive Version 0.5
Published on 31 Mar 2009, unpublished on 15 Apr 2009 All versions
doi:10.4231/D3BR8MG0K cite this
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Abstract
Random lasers don't have mirrors. The feedback in random lasers is provided by scattering in a gain medium. The efficiency of the feedback is described in terms of a photon residence time in a scattering medium. The dynamics of the random laser emission is determined by the pumping energy density, the shape and the duration of the pumping pulse (in this model, we assume a gaussian pulse-shape), the emission cross section of the gain medium, and the spontaneous emission life-time. This program demonstrates how the stimulated emission dynamics, which often can produce several short stimulated emission pulses in response to a longer pumping pulse, depends on the parameters above. The principles of operation of random lasers can be found in online presentation by Mikhail A. Noginov (Random Lasers - http://nanohub.org/resources/1311) or in the book "ISBN: 978-0-387-23913-2 - M. A. Noginov, Solid-State Random Lasers, Springer, 2005".
References
M. A. Noginov, Solid-State Random Lasers, Springer, 2005
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