Sub-wavelength photonic hooks generated in photonic chips with asymmetric array of Si3N4 micropillars
Sub-wavelength photonic hooks generated in photonic chips with asymmetric array of Si3N4 micropillars
Photonic hooks, akin to curved photonic nanojets, result from introducing asymmetry in refractive index distribution, achieved by using asymmetric particles or masking the illumination path. These structures function similarly to Airy beams, enabling particle manipulation and imaging. We propose a planar photonic chip design generating subwavelength-width photonic hooks. Illuminating three Si3N4 micro-pillars with a 532 nm TE polarized plane wave comprising one λ-wide and two λ/3-wide—produces intense photonic hooks above the micro-pillars, with a 0.7 λ FWHM. The larger pillar, separated by 2λ from the smaller ones, which are λ/3 apart, influences hook properties and optical forces. This offers potential advancements in nanophotonics and microfluidic systems integration.
Photonic hooks, Photonic nanojets, optical trapping, optical tweezer, structured light
1299104-1 1299104-3
Vincent Veluthandath, Aneesh
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Senthil Murugan, Ganapathy
a867686e-0535-46cc-ad85-c2342086b25b
10 May 2024
Vincent Veluthandath, Aneesh
6a183413-e10f-4374-bc64-a33bf7fd9cfa
Senthil Murugan, Ganapathy
a867686e-0535-46cc-ad85-c2342086b25b
Vincent Veluthandath, Aneesh and Senthil Murugan, Ganapathy
(2024)
Sub-wavelength photonic hooks generated in photonic chips with asymmetric array of Si3N4 micropillars.
Andrews, David L., Bain, Angus J. and Ambrosio, Antonio
(eds.)
In Nanophotonics X.
vol. 1299,
SPIE.
.
(doi:10.1117/12.3016709).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Photonic hooks, akin to curved photonic nanojets, result from introducing asymmetry in refractive index distribution, achieved by using asymmetric particles or masking the illumination path. These structures function similarly to Airy beams, enabling particle manipulation and imaging. We propose a planar photonic chip design generating subwavelength-width photonic hooks. Illuminating three Si3N4 micro-pillars with a 532 nm TE polarized plane wave comprising one λ-wide and two λ/3-wide—produces intense photonic hooks above the micro-pillars, with a 0.7 λ FWHM. The larger pillar, separated by 2λ from the smaller ones, which are λ/3 apart, influences hook properties and optical forces. This offers potential advancements in nanophotonics and microfluidic systems integration.
More information
Published date: 10 May 2024
Keywords:
Photonic hooks, Photonic nanojets, optical trapping, optical tweezer, structured light
Identifiers
Local EPrints ID: 496667
URI: http://eprints.soton.ac.uk/id/eprint/496667
ISSN: 0277-786X
PURE UUID: e050a7fb-b0ea-43f8-8414-7e6513a2b4ee
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Date deposited: 07 Jan 2025 19:05
Last modified: 29 Mar 2025 03:15
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Contributors
Author:
Aneesh Vincent Veluthandath
Author:
Ganapathy Senthil Murugan
Editor:
David L. Andrews
Editor:
Angus J. Bain
Editor:
Antonio Ambrosio
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