Smart optically induced nonlinear photonic crystals for frequency conversion and control

Dawei Liu; Shan Liu; Leszek Mateusz Mazur; Bingxia Wang; Peixiang Lu; Wieslaw Krolikowski; Yan Sheng

doi:10.1063/1.5141420

Smart optically induced nonlinear photonic crystals for frequency conversion and control

Dawei Liu, Shan Liu, Leszek Mateusz Mazur, Bingxia Wang, Peixiang Lu, Wieslaw Krolikowski, Yan Sheng

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We extend the functionality of nonlinear photonic crystals by fabricating a structure combining a few individual optical transformations in second harmonic generation. In particular, we employed all-optical spontaneous polarization reversal in ferroelectrics to create nonlinear holograms with curved fork-like spatial modulation of nonlinearity for the generation of second harmonic optical vortices. The curved fork-like structure represents a combination of a standard vortex harmonic generator (fork structure) and an axicon, thereby allowing us to realize the second harmonic "perfect vortices" whose diameter remains constant independently of their topological charge.

Original language	English
Article number	051104
Journal	Applied Physics Letters
Volume	116
Issue number	5
DOIs	https://doi.org/10.1063/1.5141420
Publication status	Published - 3 Feb 2020

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AU - Liu, Dawei

AU - Liu, Shan

AU - Mazur, Leszek Mateusz

AU - Wang, Bingxia

AU - Lu, Peixiang

AU - Krolikowski, Wieslaw

AU - Sheng, Yan

PY - 2020/2/3

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N2 - We extend the functionality of nonlinear photonic crystals by fabricating a structure combining a few individual optical transformations in second harmonic generation. In particular, we employed all-optical spontaneous polarization reversal in ferroelectrics to create nonlinear holograms with curved fork-like spatial modulation of nonlinearity for the generation of second harmonic optical vortices. The curved fork-like structure represents a combination of a standard vortex harmonic generator (fork structure) and an axicon, thereby allowing us to realize the second harmonic "perfect vortices" whose diameter remains constant independently of their topological charge.

AB - We extend the functionality of nonlinear photonic crystals by fabricating a structure combining a few individual optical transformations in second harmonic generation. In particular, we employed all-optical spontaneous polarization reversal in ferroelectrics to create nonlinear holograms with curved fork-like spatial modulation of nonlinearity for the generation of second harmonic optical vortices. The curved fork-like structure represents a combination of a standard vortex harmonic generator (fork structure) and an axicon, thereby allowing us to realize the second harmonic "perfect vortices" whose diameter remains constant independently of their topological charge.

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Smart optically induced nonlinear photonic crystals for frequency conversion and control

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