Far-field measurements of vortex beams interacting with nanoholes

Xavier Zambrana-Puyalto; Xavier Vidal; Ivan Fernandez-Corbaton; Gabriel Molina-Terriza

doi:10.1038/srep22185

Far-field measurements of vortex beams interacting with nanoholes

Xavier Zambrana-Puyalto^*, Xavier Vidal, Ivan Fernandez-Corbaton, Gabriel Molina-Terriza

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

225 Downloads (Pure)

Abstract

We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γ_m,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γ_m,p ratio as compared to those obtained by Gaussian beams.

Original language	English
Article number	22185
Pages (from-to)	1-10
Number of pages	10
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep22185
Publication status	Published - 25 Feb 2016

Bibliographical note

Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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10.1038/srep22185

Publisher version (open access)Final published version, 1.06 MBLicence: CC BY

Cite this

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title = "Far-field measurements of vortex beams interacting with nanoholes",

abstract = "We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γm,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γm,p ratio as compared to those obtained by Gaussian beams.",

author = "Xavier Zambrana-Puyalto and Xavier Vidal and Ivan Fernandez-Corbaton and Gabriel Molina-Terriza",

note = "Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

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AU - Zambrana-Puyalto, Xavier

AU - Vidal, Xavier

AU - Fernandez-Corbaton, Ivan

AU - Molina-Terriza, Gabriel

N1 - Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2016/2/25

Y1 - 2016/2/25

N2 - We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γm,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γm,p ratio as compared to those obtained by Gaussian beams.

AB - We measure the far-field intensity of vortex beams going through nanoholes. The process is analyzed in terms of helicity and total angular momentum. It is seen that the total angular momentum is preserved in the process, and helicity is not. We compute the ratio between the two transmitted helicity components, γm,p. We observe that this ratio is highly dependent on the helicity (p) and the angular momentum (m) of the incident vortex beam in consideration. Due to the mirror symmetry of the nanoholes, we are able to relate the transmission properties of vortex beams with a certain helicity and angular momentum, with the ones with opposite helicity and angular momentum. Interestingly, vortex beams enhance the γm,p ratio as compared to those obtained by Gaussian beams.

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Far-field measurements of vortex beams interacting with nanoholes

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Far-field measurements of vortex beams interacting with nanoholes

Abstract

Bibliographical note

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Dual nanoparticles to distinguish between right and left biomolecules

Targeted Light - Optical Mode Control at the Nanoscale

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