Solitonic waveguide reflection at an electric interface
01 Pubblicazione su rivista
Alonzo M., Soci C., Chauvet M., Fazio E.
DOI: 10.1364/OE.27.020273
ISSN: 1094-4087
A refractive index interface is dynamically induced in a bulk photorefractive material
by biasing two adjacent regions with different electric fields, thus building up an electric wall.
Effects of this interface on reflection, refraction and breathing of bright photorefractive solitons
and their associated waveguides are numerically and experimentally studied as a function of
the induced purely electric field gradient. Reflection and refraction efficiency depends on the
amplitude and sign of the applied voltages that affect both the self-confining beam and the signals
propagating inside the waveguide. Experimental tests are performed in nominally undoped
lithium niobate samples