Nonlinear wavefront shaping with optically induced three-dimensional nonlinear photonic crystals
Date
2019
Authors
Liu, Shan
Switkowski, Krzysztof
Xu, Chenglong
Tian, Jie
Wang, Bingxia
Lu, Peixiang
Krolikowski, Wieslaw
Sheng, Yan
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Macmillan Publishers Ltd
Abstract
Generation of coherent light with desirable amplitude and phase profiles throughout the
optical spectrum is a key issue in optical technologies. Nonlinear wavefront shaping offers an
exceptional way to achieve this goal by converting an incident light beam into the beam (or
beams) of different frequency with spatially modulated amplitude and phase. The realization
of such frequency conversion and shaping processes critically depends on the matching of
phase velocities of interacting waves, for which nonlinear photonic crystals (NPCs) with
spatially modulated quadratic nonlinearity have shown great potential. Here, we present the
first experimental demonstration of nonlinear wavefront shaping with three-dimensional (3D)
NPCs formed by ultrafast-light-induced ferroelectric domain inversion approach. Compared
with those previously used low-dimensional structures, 3D NPCs provide all spatial degrees
of freedom for the compensation of phase mismatch in nonlinear interactions and thereby
constitute an unprecedented system for the generation and control of coherent light at new
frequencies.
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Nature Communications
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Journal article
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Creative Commons Attribution 4.0 International License
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