A Photonic Nanojet as Tunable and Polarization-Sensitive Optical Tweezers

Aleksandr Kovrov, Andrey Novitsky, Alina Karabchevsky, Alexander S. Shalin*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied sciences. However, manipulating nano‐sized objects requires subwavelength field localization, provided by auxiliary nano‐ and microstructures. Particularly, dielectric microparticles can be used to confine light to an intense beam with a subwavelength waist, called a photonic nanojet (PNJ), which can provide sufficient field gradients for trapping nano‐objects. Herein, the scheme for wavelength‐tunable and nanoscale‐precise optical trapping is elaborated, and the possibility of lateral nanoparticle movement using the PNJ's side lobes is shown for the first time. In addition, the possibility of subwavelength positioning using polarization switching is shown. The estimated stability with respect to Brownian motion is higher compared to conventional optical trapping schemes.

Original languageEnglish
Article number1800129
JournalAnnalen der Physik
Number of pages5
ISSN0003-3804
DOIs
Publication statusPublished - 2018

Cite this

Kovrov, Aleksandr ; Novitsky, Andrey ; Karabchevsky, Alina ; Shalin, Alexander S. / A Photonic Nanojet as Tunable and Polarization-Sensitive Optical Tweezers. In: Annalen der Physik. 2018.
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abstract = "The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied sciences. However, manipulating nano‐sized objects requires subwavelength field localization, provided by auxiliary nano‐ and microstructures. Particularly, dielectric microparticles can be used to confine light to an intense beam with a subwavelength waist, called a photonic nanojet (PNJ), which can provide sufficient field gradients for trapping nano‐objects. Herein, the scheme for wavelength‐tunable and nanoscale‐precise optical trapping is elaborated, and the possibility of lateral nanoparticle movement using the PNJ's side lobes is shown for the first time. In addition, the possibility of subwavelength positioning using polarization switching is shown. The estimated stability with respect to Brownian motion is higher compared to conventional optical trapping schemes.",
author = "Aleksandr Kovrov and Andrey Novitsky and Alina Karabchevsky and Shalin, {Alexander S.}",
year = "2018",
doi = "10.1002/andp.201800129",
language = "English",
journal = "Annalen der Physik",
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A Photonic Nanojet as Tunable and Polarization-Sensitive Optical Tweezers. / Kovrov, Aleksandr; Novitsky, Andrey; Karabchevsky, Alina; Shalin, Alexander S.

In: Annalen der Physik, 2018.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - A Photonic Nanojet as Tunable and Polarization-Sensitive Optical Tweezers

AU - Kovrov, Aleksandr

AU - Novitsky, Andrey

AU - Karabchevsky, Alina

AU - Shalin, Alexander S.

PY - 2018

Y1 - 2018

N2 - The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied sciences. However, manipulating nano‐sized objects requires subwavelength field localization, provided by auxiliary nano‐ and microstructures. Particularly, dielectric microparticles can be used to confine light to an intense beam with a subwavelength waist, called a photonic nanojet (PNJ), which can provide sufficient field gradients for trapping nano‐objects. Herein, the scheme for wavelength‐tunable and nanoscale‐precise optical trapping is elaborated, and the possibility of lateral nanoparticle movement using the PNJ's side lobes is shown for the first time. In addition, the possibility of subwavelength positioning using polarization switching is shown. The estimated stability with respect to Brownian motion is higher compared to conventional optical trapping schemes.

AB - The ability to manipulate small objects with focused laser beams has opened a venue for investigating dynamical phenomena relevant to both fundamental and applied sciences. However, manipulating nano‐sized objects requires subwavelength field localization, provided by auxiliary nano‐ and microstructures. Particularly, dielectric microparticles can be used to confine light to an intense beam with a subwavelength waist, called a photonic nanojet (PNJ), which can provide sufficient field gradients for trapping nano‐objects. Herein, the scheme for wavelength‐tunable and nanoscale‐precise optical trapping is elaborated, and the possibility of lateral nanoparticle movement using the PNJ's side lobes is shown for the first time. In addition, the possibility of subwavelength positioning using polarization switching is shown. The estimated stability with respect to Brownian motion is higher compared to conventional optical trapping schemes.

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DO - 10.1002/andp.201800129

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