NDLI: Self-action of periodically modulated laser beams in doped waveguides

Content Provider	IEEE Xplore Digital Library
Author	Derbov, V.L. Serov, V.V. Plastun, I.L. Shilov, S.V.
Copyright Year	2002
Description	Author affiliation: Saratov State Univ., Russia (Derbov, V.L.; Serov, V.V.)
Abstract	We report numerical modeling of self-action of a beam, whose amplitude or phase is periodically modulated in time, in a gradient waveguide medium doped with two-level saturable active centers. For frequencies close to the dopant absorption line and modulation periods close to its relaxation time the response of the medium is no more instantaneous, and the description in terms of susceptibility fails. We account for the delayed response of the medium by solving numerically the full set of Maxwell-Bloch equations. In case of modulation wavelength and the diffraction length larger than the propagation distance we also make use of a simplified scheme based oil synchronous interaction approximation. Using these schemes we study the influence of the non-stationary self-action of the beam on the transmission of modulation signal through the doped waveguide. It is shown that in the time dependence of the polarization and population difference the nonlinear distortions of the modulation signal can be much stronger than in the output field intensity.
Sponsorship	Minstry of Infrastructure & State Committee for Sci. Res
Starting Page	161
Ending Page	164
File Size	257310
Page Count	4
File Format	PDF
ISBN	0780373758
DOI	10.1109/ICTON.2002.1009536
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-21
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical modulation Waveguide lasers Laser beams Laser modes Semiconductor process modeling Numerical models Phase modulation Amplitude modulation Frequency Absorption
Content Type	Text
Resource Type	Article

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