19 July 1999 Guiding light by incoherent light
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Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354775
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States
Abstract
We demonstrate, for the first time, optical guidance of light beams using incoherent light. Such guidance is made possible by generating self-trapped dark beams (dark spatial solitons) inside a bulk photorefractive material using spatially incoherent light. We show that, in the 1D case, planar or Y-splitting waveguides induced by self-trapped incoherence dark stripes can guide other coherent light of a different wavelength. In the 2D case, incoherent dark solitons generated from optical vortices induce refractive- index changes akin to circular channel waveguides. These experiments introduce the possibility of controlling high- power laser beams with low-power incoherent light sources such as Light Emitting Diodes.
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Zhigang Chen, Zhigang Chen, Mordechai Segev, Mordechai Segev, } "Guiding light by incoherent light", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354775; https://doi.org/10.1117/12.354775
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