Light induced by charged particles in optical fibers

The field of a charged particle passing through or near an optical fiber polarizes the fiber atoms transiently. This produces a particle-induced guided light (PIGL). PIGL can also be assisted by a metallic object stuck to the fiber, via plasmon excitation. Type-I PIGL is produced in a translation-in...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2013-08, Vol.309, p.162-166
Main Authors: Artru, Xavier, Ray, Cédric
Format: Article
Language:English
Subjects:
Beam diagnostics
Cherenkov radiation
Monomode optical fibers
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Summary:The field of a charged particle passing through or near an optical fiber polarizes the fiber atoms transiently. This produces a particle-induced guided light (PIGL). PIGL can also be assisted by a metallic object stuck to the fiber, via plasmon excitation. Type-I PIGL is produced in a translation-invariant part of the fiber, type-II PIGL is produced at a fiber end, an indentation or a metallic object. Properties of type-I PIGL in a single-mode fiber (spectrum, polarization) are reviewed. Order of magnitudes are given for type-II PIGL from a fiber end or a metallic ball. Interference effects are outlined, in particular the guided Smith–Purcell radiation. Applications of PIGL to beam diagnostics are discussed.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2013.01.061