Cited by 102Orbital Angular Momentum in OpticsMetamaterials and Metasurfaces ApplicationsMolecular spectroscopy and chirality

Angular momentum-induced circular dichroism in non-chiral nanostructures

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Zambrana-Puyalto, Xavier, Vidal, Xavier, Molina-Terriza, Gabriel·2014·Nature Communications

Abstract

Circular dichroism, that is, the differential absorption of a system to left and right circularly polarized light, is one of the only techniques capable of providing morphological information of certain samples. In biology, for instance, circular dichroism spectroscopy is widely used to study the structure of proteins. More recently, it has also been used to characterize metamaterials and plasmonic structures. Typically, circular dichorism can only be observed in chiral objects. Here we present experimental results showing that a non-chiral sample such as a subwavelength circular nanoaperture can produce giant circular dichroism when a vortex beam is used to excite it. These measurements can be understood by studying the symmetries of the sample and the total angular momentum that vortex beams carry. Our results show that circular dichroism can provide a wealth of information about the sample when combined with the control of the total angular momentum of the input field.

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Crossref · 10.1038/ncomms5922

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  • For a planar anisotropic element (transparent retarder with phase δ and anisotropy axis at angle α), the Jones-matrix transformation of wave polarization becomes (5), with off-diagonal elements originating from geometric phases induced by rotation of coordinates.

    “Performing a rotation by the angle α to the laboratory coordinate frame and also writing this matrix in the helicity basis of right-hand and left-hand circular polarizations, the Jones-matrix transformation of the wave polarization becomes 5,6,37- 39,114”

    From Spin–orbit interactions of light (2015) · cites this paper as [114]

    Split into 2 atoms — 0 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 1 unverifiable. Expand the claim to see per-atom verdicts.

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  • The off-diagonal geometric-phase elements of Eq. (5) offer helicity-dependent manipulation of light using the orientation of the anisotropy axis; anisotropic subwavelength gratings with space-variant orientation have been employed for geometric-phase-induced shaping of light.

    “The off-diagonal geometric-phase elements of Eq. (5) offer helicity-dependent manipulation of light using the orientation of the anisotropy axis. In particular, anisotropic subwavelength gratings with space-variant orientation α = α x , y ( ) have been employed for the geometric-phase-induced shaping of light 5,6,37- 39,41,114- 117 .”

    From Spin–orbit interactions of light (2015) · cites this paper as [114]

    Split into 2 atoms — 0 confirmed, 0 partially supported, 0 disputed, 0 misattributed, 2 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • The x-variant anisotropic structure deflects right-hand and left-hand polarized beams in opposite x-directions.

    “Thus, the x -variant anisotropic structure deflects right-hand and left-hand polarized beams in opposite x -directions 5,37,42,114 .”

    From Spin–orbit interactions of light (2015) · cites this paper as [114]

    The Discussion describes polarization-dependent transmission through a cylindrically symmetric target, and the Methods describe mirror-related transmitted fields. Neither passage addresses an x-variant anisotropic structure deflecting right- and left-hand polarized beams in opposite x-directions; searches for deflection and transverse steering found no such passage in our copy. (LLM, conf=0.74)

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Authors
Zambrana-Puyalto, X., Vidal, X., & Molina-Terriza, G.
Affiliations
Macquarie University (AU)
Venue
Nature Communications
Published
2014-09-12
Volume
5
Issue
1
Pages
4922-4922
ISSN
2041-1723 (ISSN-L)
OpenAlex
W1987978735
Cited by
102
References
57
Citations by year
2026: 6 · 2025: 2 · 2024: 7 · 2023: 7 · 2022: 7 · 2021: 16 · 2020: 4 · 2019: 11 · 2018: 11 · 2017: 8 · 2016: 14 · 2015: 7 · 2014: 2
FWCI
5.14
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • TECNALIA Publications (Fundación TECNALIA Research & Innovation) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • Macquarie University
  • Australian Research Council (FT110100924, DP110103697)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Orbital Angular Momentum in Optics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
  • Physical Sciences › Chemistry › Spectroscopy › Molecular spectroscopy and chirality
Keywords
circular dichroism, optical vortices, orbital angular momentum, chiral symmetry, differential absorption, plasmonic nanostructures, metamaterials

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