Diatomic metasurface based broadband J-plate for arbitrary spin-to-orbital conversion

Wang, Shuai1; Li, Fengjun1; Deng, Junhong2; Ye, Xuan1; Deng, Zi-Lan1; Cao, Yaoyu1; Guan, Bai-Ou1; Li, Guixin2,3; Li, Xiangping1

2019-08-07

10.1088/1361-6463/ab2229

JOURNAL OF PHYSICS D-APPLIED PHYSICS   影响因子和分区

0022-3727

1361-6463

Conventional optical elements to realize spin-to-orbital angular momentum conversion of light can only allow conversion of opposite spin angular momentum (SAM) states into opposite orbital angular momentum (OAM) states. This limitation was recently broken by a metasurface based J-plate with combined geometric and propagation phase design that can convert arbitrary SAM into angular momentum states with independent OAM. However, the intrinsic dispersive nature of the propagation phase restricts its bandwidth to a specific wavelength. Here, we demonstrate a J-plate that can realize arbitrary spin-to-orbital angular momentum conversion in a broad bandwidth from 650nm to 900nm. This is achieved through a novel diatomic metasurface design by combining the geometric phase and detour phase, both of which are completely decoupled from the spectral response of meta-atoms and thus intrinsic broadband. The demonstration of broadband arbitrary spin-orbit-conversion and vector vortex beams by such J-plate significantly opens new routes for high-performance spin-orbital interaction of light.

spin-orbital angular momentum interaction metasurface vector vortex beam

SCI ; EI

英语

其他

Natural Science Foundation of the Shenzhen Innovation Committee[J CYJ20170412153113701] ; Natural Science Foundation of the Shenzhen Innovation Committee[JCYJ20170818102640668]

Physics

Physics, Applied

WOS:000470863600002

IOP PUBLISHING LTD

20193007234339

Bandwidth ; Vortex flow

Fluid Flow, General:631.1 ; Information Theory and Signal Processing:716.1

PHYSICS

Web of Science

1.Jinan Univ, Inst Photon Technol, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou 510632, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China

Wang, Shuai,Li, Fengjun,Deng, Junhong,et al. Diatomic metasurface based broadband J-plate for arbitrary spin-to-orbital conversion[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2019,52(32).

Wang, Shuai.,Li, Fengjun.,Deng, Junhong.,Ye, Xuan.,Deng, Zi-Lan.,...&Li, Xiangping.(2019).Diatomic metasurface based broadband J-plate for arbitrary spin-to-orbital conversion.JOURNAL OF PHYSICS D-APPLIED PHYSICS,52(32).

Wang, Shuai,et al."Diatomic metasurface based broadband J-plate for arbitrary spin-to-orbital conversion".JOURNAL OF PHYSICS D-APPLIED PHYSICS 52.32(2019).