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Geometric phase and nonlinear photonic metasurfaces
Author(s): Guixin Li
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Paper Abstract

We report the generation of spin controlled OAM of light in harmonic generations by using ultrathin photonic metasurfaces. The spin manipulation of OAM mode of harmonic waves is experimentally verified by using second harmonic generation (SHG) from gold meta-atom with three-fold rotational symmetry. By introducing nonlinear phase singularity into the metasurface devices, we successfully generate and measure the topological charges of spin-controlled OAM mode of SHG through an on-chip metasurface interferometer. The nonlinear photonic metasurface proposed in this work not only opens new avenues for manipulating the OAM of nonlinear optical signals, but also benefits the understanding of the nonlinear spin-orbit interaction of light in nanoscale devices.

Paper Details

Date Published: 14 May 2018
PDF: 5 pages
Proc. SPIE 10639, Micro- and Nanotechnology Sensors, Systems, and Applications X, 106390O (14 May 2018); doi: 10.1117/12.2304724
Show Author Affiliations
Guixin Li, Southern Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10639:
Micro- and Nanotechnology Sensors, Systems, and Applications X
Thomas George; Achyut K. Dutta; M. Saif Islam, Editor(s)

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