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Content Provider | IEEE Xplore Digital Library |
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Author | Zilkie, A.J. Meier, J. Mojahedi, M. Helmy, A.S. Poole, P. Barrios, P. Poitras, D. Rotter, T.J. Chi Yang Stintz, A. Malloy, K.J. Smith, P.W.E. Aitchison, S.J. |
Copyright Year | 1983 |
Abstract | We report time-resolved measurements of the linewidth enhancement factors (-factors) , and , associated with the adiabatic carrier recovery, carrier heating, and two-photon absorption dynamical processes, respectively, in semiconductor optical amplifiers (SOAs) with different degrees of dimensionality-one InAs/InGaAsP/InP quantum dot (0-D), one InAs/InAlGaAs/InP quantum dash (1-D), and a matching InGaAsP/InGaAsP/InP quantum well (2-D)-all operating near 1.55- wavelengths. We find the lowest values in the QD SOA, 2-10, compared to 8-16 in the QW, and values of and that are also lower than in the QW. In the QD SOA, the -factors exhibit little wavelength dependence over the gain bandwidth, promising for wide-bandwidth all-optical applications. We also find significant differences in the -factors of lasers with the same structure, due to the differences between gain changes that are induced optically or through the electrical bias. For the lasers we find the QW structure instead has the lower -factor, having implications for directly modulated laser applications. |
Sponsorship | IEEE Lasers and Electro-Optics Society Optical Society of America |
Starting Page | 1498 |
Ending Page | 1509 |
Page Count | 12 |
File Size | 868397 |
File Format | |
ISSN | 07338724 |
Volume Number | 26 |
Issue Number | 11 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-06-01 |
Publisher Place | U.S.A. |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Quantum dots Semiconductor optical amplifiers Quantum dot lasers Quantum well lasers Semiconductor lasers Laser theory Indium phosphide Chirp modulation Phase modulation Councils semiconductor optical amplifiers Linewidth enhancement factor phase modulation quantum dots quantum wells quantum wires semiconductor lasers |
Content Type | Text |
Resource Type | Article |
Subject | Atomic and Molecular Physics, and Optics |
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