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Proceedings Paper

Modeling and characterization of pulse shape and pulse train dynamics in two-section passively mode-locked quantum dot lasers
Author(s): R. Raghunathan; J. K. Mee; M. T. Crowley; F. Grillot; V. Kovanis; L. F. Lester
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Paper Abstract

A nonlinear delay differential equation model for passive mode-locking in semiconductor lasers, seeded with parameters extracted from the gain and loss spectra of a quantum dot laser, is employed to simulate and study the dynamical regimes of mode-locked operation of the device. The model parameter ranges corresponding to these regimes are then mapped to externally-controllable parameters such as gain current and absorber bias voltage. Using this approach, a map indicating the approximate regions corresponding to fundamental and harmonically mode locked operation is constructed as a function of gain current and absorber bias voltage. This is shown to be a highly useful method of getting a sense of the highest repetition rates achievable in principle with a simple, two-section device, and provides a guideline toward achieving higher repetition rates by simply adjusting external biasing conditions instantaneously while the device is in operation, as opposed to re-engineering the device with additional passive or saturable absorber sections. The general approach could potentially aid the development of numerical modeling techniques aimed at providing a systematic guideline geared toward developing microwave and RF photonic sources for THz applications.

Paper Details

Date Published: 14 March 2013
PDF: 11 pages
Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 86190C (14 March 2013); doi: 10.1117/12.2005434
Show Author Affiliations
R. Raghunathan, The Univ. of New Mexico (United States)
J. K. Mee, The Univ. of New Mexico (United States)
Air Force Research Lab. (United States)
M. T. Crowley, BinOptics Corp. (United States)
F. Grillot, Telecom ParisTech, CNRS (France)
V. Kovanis, Air Force Research Lab. (United States)
L. F. Lester, The Univ. of New Mexico (United States)

Published in SPIE Proceedings Vol. 8619:
Physics and Simulation of Optoelectronic Devices XXI
Bernd Witzigmann; Marek Osinski; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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