Superluminal light pulse propagation via rephasing in a transparent anomalously dispersive medium
نویسندگان
چکیده
منابع مشابه
Transparent anomalous dispersion and superluminal light-pulse propagation at a negative group velocity
Anomalous dispersion cannot occur in a transparent passive medium where electromagnetic radiation is being absorbed at all frequencies, as pointed out by Landau and Lifshitz. Here we show, both theoretically and experimentally, that transparent linear anomalous dispersion can occur when a gain doublet is present. Therefore, a superluminal light-pulse propagation can be observed even at a negati...
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We present the first detailed account of modelling pulses in Helmholtz-type nonlinear systems with both temporal and spatial dispersion. Exact analytical solitons will be reported, and their stability examined through mathematical analysis and computer simulations. © 2010 Optical Society of America OCIS codes: (190.5530) Pulse propagation and temporal solitons; (190.4400) Nonlinear optics, mate...
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With the recent rediscovery of slowand fast-light effects, there has been much interest in pulse propagation phenomena that lead to apparently superluminal pulse transmission. This raises immediate questions about causality and special relativity violations and elicits curiosity about the physical mechanisms responsible for these effects. This thesis will address these issues theoretically and ...
متن کامل. cl as s - ph ] 2 2 Ju n 20 01 On the superluminal propagation of light - pulses in a ” transparent ” dispersive medium
The mechanisms leading to a seemingly superluminal propagation of light in dispersive media are examined. The anomalous dispersion near an absorption line, involved in the first experiments displaying negative group velocity propagation, is shown to be not only simpler but also more efficient than the so-called transparent dispersion used in the later experiments of Wang et al. (Nature (London)...
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We have examined the propagation of femtosecond laser pulses in an absorbing dye solution through a short to a long range of propagation distance. The transmitted pulses show strong spectral shift and a superluminal to subluminal transition in the propagation velocity keeping its initial shape almost intact. It is verified that the peak velocity is well described by a modified group velocity v(...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2001
ISSN: 1094-4087
DOI: 10.1364/oe.8.000344