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Sub- and superluminal velocity of supercontinuum pulses propagating in scattering media

Title
Sub- and superluminal velocity of supercontinuum pulses propagating in scattering media
Type
Article in International Scientific Journal
Year
2006
Authors
Weigand, R
(Author)
Other
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Crespo, H
(Author)
FCUP
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Balcou, P
(Author)
Other
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Journal
Vol. 85
Pages: 105-115
ISSN: 0946-2171
Publisher: Springer Nature
Indexing
Scientific classification
FOS: Natural sciences > Physical sciences
Other information
Authenticus ID: P-004-GPH
Abstract (EN): The XFROG technique has been applied to measuring temporal shifts of supercontinuum pulses propagating in scattering media consisting of spherical beads. Negative (subluminal) and positive (superluminal) changes in the group velocity have been measured. This behaviour can be explained in terms of spectral scattering losses and is directly related to the complex time formulation used in other phenomena where tunnelling times are used to describe the velocity changes. A numerical simulation of the XFROG measurement is consistent with the experimental results.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 11
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