Optical elements coupling the spin and orbital angular momentum (SAM/OAM) of light have found a range of applications in classical and quantum optics. The J-plate, with J referring to the photon’s total angular momentum (TAM), is a metasurface device that imparts two arbitrary OAM states on an arbitrary orthogonal basis of spin states. We demonstrate that when these J-plates are cascaded in series, they can generate several single quantum number beams and versatile superpositions thereof. Moreover, in contrast to previous spin-orbit-converters, the output polarization states of cascaded J-plates are not constrained to be the conjugate of the input states. Cascaded J-plates are also demonstrated to produce vector vortex beams and complex structured light, providing new ways to control TAM states of light.
|Original language||English (US)|
|State||Published - Feb 27 2019|
Bibliographical noteKAUST Repository Item: Exported on 2021-03-12
Acknowledged KAUST grant number(s): OSR-2016-CRG5-2995
Acknowledgements: Air Force Office of Scientific Research (MURI FA9550-14-1-0389, FA9550-16-1-0156); King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-2995); National Research Foundation, Prime Minister’s Office, Singapore (NRF-CRP15-2015-03); National Science Foundation (1541959, DGE1144152). This work was supported in part by the Air Force Office of Scientific Research (Grant Nos. MURI FA9550-14-1-0389 and FA9550-16-1-0156) and King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (Award No. OSR-2016-CRG5-2995). C.W.Q. and Y.W.H. acknowledge support from the National Research Foundation, Prime Minister’s Office, Singapore under its Competitive Research (CRP Award No. NRF-CRP15-2015-03). N.A.R. acknowledges support from the National Science Foundation Graduate Research Fellowship Program under grant no. DGE1144152. This work was performed in part at the Center for Nanoscale Systems (CNS), a member of the National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation under NSF award no. 1541959. CNS is a part of Harvard University.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics