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Total internal reflection in gain medium slab



The problem of light propagation through a slab of gain medium is studied in terms of the transfer matrix pole distribution. Identifying the lasing by the existence of the poles in the upper half-space of the complex frequencies, we demonstrate that under the condition of total internal reflection lasing may be observed at a finite thickness of the slab; further increase in the thickness results in the quenching of lasing. However, in the latter case the amplification of reflected wave is possible.



Applied Physics A: Materials Science ProcessingSpringer Journals

Published: Apr 1, 2012

DOI: 10.1007/s00339-011-6740-2

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