Share Email Print
cover

Proceedings Paper

Multi-foci metalens for spin and orbital angular momentum interaction
Author(s): Shengtao Mei; M. Q. Mehmood; Kun Huang; Cheng-Wei Qiu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The development of metasurface, capable of controlling wave-fronts through interfacial phase discontinuity, offers a fascinating methodology for designing two dimensional miniaturized optical devices. Owing to an additional advantage of the enhanced useful transmission via Bainet-inverted matasurface, we exploit them to demonstrate an intriguing concept of merging the phase-profiles of two distinct optical devices, a lens and a spiral phase plate, to realize an ultrathin nanostructured optical vortex lens. The proposed device can has multiple focal planes along the longitudinal direction; whereas the number of focal plans, corresponding topological charges and focal lengths can readily be tailored to meet any desired requirements. Meanwhile, the dual-polarity feature of the optical vertex metalens exhibits spin controlled real and virtual focal plans, while dispersionless aptitude of nanobars enables its working over the broadband. The concept unveils a novel way of employing metasurface, to engraft the phase profiles of multiple bulk devices, to achieve unique functionalities for promising applications in integrated photonics.

Paper Details

Date Published: 1 September 2015
PDF: 13 pages
Proc. SPIE 9544, Metamaterials, Metadevices, and Metasystems 2015, 95441J (1 September 2015); doi: 10.1117/12.2187375
Show Author Affiliations
Shengtao Mei, National Univ. of Singapore (Singapore)
M. Q. Mehmood, National Univ. of Singapore (Singapore)
Kun Huang, National Univ. of Singapore (Singapore)
Cheng-Wei Qiu, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 9544:
Metamaterials, Metadevices, and Metasystems 2015
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

© SPIE. Terms of Use
Back to Top