Light deflection and modulation through dynamic evolution of photoinduced waveguides

Abstract : Light induced waveguides produced by lateral illumination of a photorefractive crystal show a complex dynamic evolution upon removal of the sustaining applied electric field. Using this effect, deflection and modulation of the guided light is realized by taking advantage of the screening and counter-screening of the space charge distribution. The spot separation upon deflection can exceed 10 times the original waveguide width. Numerical simulations of the refractive index evolution and beam propagation show a good agreement with the observations.
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https://hal.archives-ouvertes.fr/hal-00322549
Contributor : Nicolas Fressengeas <>
Submitted on : Thursday, September 18, 2008 - 9:39:21 AM
Last modification on : Tuesday, March 5, 2019 - 9:32:52 AM
Long-term archiving on: Friday, June 4, 2010 - 11:32:13 AM

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Germano Montemezzani, Mohammed Gorram, Nicolas Fressengeas, Flurin Juvalta, Mojca Jazbinsek, et al.. Light deflection and modulation through dynamic evolution of photoinduced waveguides. Optics Express, Optical Society of America, 2008, 16 (21), pp.16646-16658. ⟨10.1364/OE.16.016646⟩. ⟨hal-00322549⟩

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