Self-Trapping of Spatially and Temporally Incoherent White Light in a Photochemical Medium

We report that a beam of spatially and temporally incoherent white light self-traps by initiating free-radical polymerization in an organosiloxane medium. Refractive index changes due to polymerization lead to the formation of a narrow channel waveguide that traps and guides the entire multimode, br...

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Published in:Journal of the American Chemical Society 2006-01, Vol.128 (2), p.406-407
Main Authors: Zhang, Jihua, Kasala, Kailash, Rewari, Abhitej, Saravanamuttu, Kalaichelvi
Format: Article
Language:English
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Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other topics in optical properties of condensed matter and other interactions of matter with particles and radiation
Other topics in optical properties, condensed matter spectroscopy and other interactions of particles and radiation with condensed matter
Physics
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cited_by cdi_FETCH-LOGICAL-a378t-a841a849cf078660fd4fbc6653984eb301ba8732d3b7640bca02b84a9a25ea963
cites cdi_FETCH-LOGICAL-a378t-a841a849cf078660fd4fbc6653984eb301ba8732d3b7640bca02b84a9a25ea963
container_end_page 407
container_issue 2
container_start_page 406
container_title Journal of the American Chemical Society
container_volume 128
creator Zhang, Jihua
Kasala, Kailash
Rewari, Abhitej
Saravanamuttu, Kalaichelvi
description We report that a beam of spatially and temporally incoherent white light self-traps by initiating free-radical polymerization in an organosiloxane medium. Refractive index changes due to polymerization lead to the formation of a narrow channel waveguide that traps and guides the entire multimode, broadband beam without diffraction. The response time of the system, which is determined by the inherently slow rate of free-radical polymerization, exceeds by several orders of magnitude the femtosecond-scale random phase fluctuations that characterize white light. Self-trapping of incoherent light is possible in the photochemical medium because it responds to the time-averaged intensity profile of the white light beam.
doi_str_mv 10.1021/ja056838+
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other topics in optical properties of condensed matter and other interactions of matter with particles and radiation
Other topics in optical properties, condensed matter spectroscopy and other interactions of particles and radiation with condensed matter
Physics
title Self-Trapping of Spatially and Temporally Incoherent White Light in a Photochemical Medium
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