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Spin and Geometric Phase Control Four‐Wave Mixing from Metasurfaces
Author(s) -
Li Guixin,
Sartorello Giovanni,
Chen Shumei,
Nicholls Luke H.,
Li King Fai,
Zentgraf Thomas,
Zhang Shuang,
Zayats Anatoly V.
Publication year - 2018
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201800034
Subject(s) - geometric phase , mixing (physics) , polarization (electrochemistry) , angular momentum , physics , nonlinear system , excitation , phase (matter) , four wave mixing , nonlinear optics , spin polarization , homogeneous space , optics , symmetry (geometry) , spin (aerodynamics) , condensed matter physics , quantum mechanics , chemistry , geometry , mathematics , thermodynamics , electron
The spin angular momentum of light plays an important role in nonlinear interactions in optical systems with rotational symmetries. Here, the existence of the nonlinear geometric Berry phase is demonstrated in the four‐wave mixing process and applied to spin‐controlled nonlinear light generation from plasmonic metasurfaces. The polarization state of four‐wave mixing from the ultrathin metasurfaces, comprising gold meta‐atoms with four‐fold rotational symmetry, can be controlled by manipulating the spin of the excitation beams. The mutual orientation of the meta‐atoms in the metasurface influences the intensity of four‐wave mixing via the geometric phase effects. These findings provide novel solutions for designing metasurfaces for spin‐controlled nonlinear optical processes with inbuilt all‐optical switching.