Light deflection and modulation through dynamic evolution of photoinduced waveguides
Author(s) -
Germano Montemezzani,
M. Gorram,
Nicolas Fressengeas,
Flurin Juvalta,
Mojca Jazbinšek,
Peter Günter
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.016646
Subject(s) - optics , deflection (physics) , light beam , electric field , refractive index , materials science , physics , quantum mechanics
Light induced waveguides produced by lateral illumination of a hotorefractive 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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