Arbitrary spin-to-orbital angular momentum conversion of light

被引：880
|
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
收藏
页码：896 / 900
页数：5
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