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Proceedings Paper

Photonic-crystal superradiant laser: effects of homogeneous and inhomogeneous broadening of an active medium
Author(s): Naum S. Ginzburg; Ekaterina R. Kocharovskaya; Alexander S. Sergeev; Alexander A. Telnykh
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Paper Abstract

We investigate superradiant lasing in 1D photonic crystal taking into account both homogeneous and inhomogeneous broadening in a two-level active medium. The latter may be based on, e.g., the quantum-well heterostructures and the fibers activated by color centers where Bragg structure can be fabricated artificially by means of a periodic modulation of the cladding layers. The truncated Maxwell-Bloch equations for the counter-propagating waves, the polarization and inversion of an inhomogeneously broadened two-level medium are used to analyze numerically the interplay between the back-scattering, amplification, dispersion, and de-phasing of waves. It is found that, if the photonic band gap is less than the coherent amplification bandwidth, there is a wide range of the pumping and relaxation parameters of a two-level medium where superradiant lasing exists and results in generation of a quasi-periodic and/or chaotic series of powerful and short pulses similar to those of Dicke superfluorescence. It is the cavity mode selection due to distributed feedback caused by the resonant Bragg structure which is responsible for the existence of superradiant lasing. Typical parameters of superradiant photonic-crystal lasers, including lengths, photonic band gaps and relaxation rates, are indicated.

Paper Details

Date Published: 18 November 2008
PDF: 6 pages
Proc. SPIE 7138, Photonics, Devices, and Systems IV, 71381C (18 November 2008); doi: 10.1117/12.818016
Show Author Affiliations
Naum S. Ginzburg, Institute of Applied Physics (Russian Federation)
Ekaterina R. Kocharovskaya, Institute of Applied Physics (Russian Federation)
Alexander S. Sergeev, Institute of Applied Physics (Russian Federation)
Alexander A. Telnykh, Institute of Applied Physics (Russian Federation)

Published in SPIE Proceedings Vol. 7138:
Photonics, Devices, and Systems IV
Pavel Tománek; Dagmar Senderáková; Miroslav Hrabovský, Editor(s)

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