Nonlinear dynamics of two-color optical vortices in lithium niobate crystals
Date
2008-04-03
Authors
Dreischuh, Alexander
Neshev, Dragomir
Kolev, Vesselin Z
Saltiel, Solomon
Samoc, Marek
Krolikowski, Wieslaw
Kivshar, Yuri
Journal Title
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Volume Title
Publisher
Optical Society of America
Abstract
We study experimentally the nonlinear dynamics of two-color
optical vortex beams in the presence of second-harmonic generation combined
with the effects of photo- and thermal refraction, as well as self- and
induced-phase modulation.We use an iron-doped lithium niobate crystal as
a nonlinear medium for the vortex propagation and observe experimentally,
depending on the laser wavelength, a decay of a double-charge vortex, splitting
and reshaping of background beam, pattern formation, and controllable
nonlinear rotation of a vortex pair.
Description
Keywords
Nonlinear optics, transverse effects in, Nonlinear optics, Frequency conversion, Self-action effects, Photorefractive nonlinear optics
Citation
Optics Express 16.8 (2008): 5406-5420
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Source
Optics Express
Type
Journal article
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