NDLI: Comprehensive Finite-Difference Time-Dependent Beam Propagation Model of Counterpropagating Picosecond Pulses in a Semiconductor Optical Amplifier

Content Provider	IEEE Xplore Digital Library
Author	Razaghi, M. Ahmadi, V. Connelly, M.J.
Copyright Year	1983
Abstract	In this paper, we present a numerical model to study counter pulse propagation in semiconductor optical amplifiers. An improved finite-difference beam propagation method for solving the modified nonlinear Schrodinger equation is applied for the first time in the counterpropagation regime. In our model, group velocity dispersion, two-photon absorption, ultrafast nonlinear refraction, and the change in the gain peak wavelength with carrier density are included, which have not been considered simultaneously in previous counterpropagation models. The model is applied to demonstrate how a subpicosecond and picosecond probe pulse shape and spectrum can be modified by a counterpropagating pump pulse. Based on the results obtained by this model, while subpicosecond probe pulses can be compressed by in this scheme, their time-bandwidth product are also improved significantly. Furthermore, the effects of several parameters are analyzed to obtain the proper probe spectral peak shift using counterpropagating probe pulses. The accuracy and computational efficiency of the new scheme are assessed through numerical examples and are shown to be superior to previously published approaches.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	3162
Ending Page	3174
Page Count	13
File Size	813696
File Format	PDF
ISSN	07338724
Volume Number	27
Issue Number	15
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite difference methods Optical propagation Optical pulses Pulse amplifiers Semiconductor optical amplifiers Probes Pulse shaping methods Numerical models Counting circuits Schrodinger equation ultrafast nonlinear effects Counterpropagation pulse shaping semiconductor optical amplifier
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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