Arbitrary spin-to-orbital angular momentum conversion of light

被引：954

作者：

Devlin, Robert C. ^{[1
]}

Ambrosio, Antonio ^{[1
,2
,3
,4
]}

Rubin, Noah A. ^{[1
]}

Mueller, J. P. Balthasar ^{[1
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA

[3] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[4] Univ Naples Federico II, CNR, Ist Superconduttori Mat Innovat & Dispositivi, Complesso Univ Monte St Angelo,Via Cintia, I-80126 Naples, Italy

来源：

SCIENCE | 2017年 / 358卷 / 6365期

基金：

美国国家科学基金会;

关键词：

DIELECTRIC METASURFACES; LASER-BEAMS; RESOLUTION; PHASE; DISLOCATIONS; ENTANGLEMENT; TRANSMISSION;

D O I：

10.1126/science.aao5392

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Optical elements that convert the spin angular momentum (SAM) of light into vortex beams have found applications in classical and quantum optics. These elements-SAM-toorbital angular momentum (OAM) converters-are based on the geometric phase and only permit the conversion of left-and right-circular polarizations (spin states) into states with opposite OAM. We present a method for converting arbitrary SAM states into total angular momentum states characterized by a superposition of independent OAM. We designed a metasurface that converts left-and right-circular polarizations into states with independent values of OAM and designed another device that performs this operation for elliptically polarized states. These results illustrate a general material-mediated connection between SAM and OAM of light and may find applications in producing complex structured light and in optical communication.

引用

页码：896 / 900

页数：5

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