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Proceedings Paper

Theory of enhanced laser linewidth in semiconductor lasers with a phase-sensitive treatment of the Fabry-Perot
Author(s): Dietmar Preisser; Ortwin G. Hess
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Paper Abstract

We present a quantized version of the Maxwell-Bloch equations keeping spatial dependency. The equations of motion for a semiconductor laser are derived in density matrix theory. The underlying approximations in various limits are discussed carefully. The derived equations of motion allow a comparison to the Langevin approach and a discussion of its validity. An analytic solution for the stationary problem that includes phase sensitivity will be given. A natural consequence of the phase sensitivity is an enhancement of the laser linewidth (beyond the Schawlow-Townes limit) in addition to the one that is commonly attributed to non-orthogonality of modes in longitudinal or transverse direction.

Paper Details

Date Published: 12 June 2002
PDF: 16 pages
Proc. SPIE 4646, Physics and Simulation of Optoelectronic Devices X, (12 June 2002); doi: 10.1117/12.470532
Show Author Affiliations
Dietmar Preisser, DLR Stuttgart (Germany)
Ortwin G. Hess, DLR Stuttgart (Finland)

Published in SPIE Proceedings Vol. 4646:
Physics and Simulation of Optoelectronic Devices X
Peter Blood; Marek Osinski; Yasuhiko Arakawa, Editor(s)

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