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3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation

Research output: Contribution to journalArticlepeer-review

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3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation. / Sokolovskii, Grigorii S.; Melissinaki, Vasileia; Fedorova, Ksenia A.; Dudelev, Vladislavv; Losev, Sergey N.; Bougrov, Vladislav E.; Sibbett, Wilson; Farsari, Maria; Rafailov, Edik U.

In: Scientific Reports, Vol. 8, 14618, 02.10.2018.

Research output: Contribution to journalArticlepeer-review

Harvard

Sokolovskii, GS, Melissinaki, V, Fedorova, KA, Dudelev, V, Losev, SN, Bougrov, VE, Sibbett, W, Farsari, M & Rafailov, EU 2018, '3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation', Scientific Reports, vol. 8, 14618. https://doi.org/10.1038/s41598-018-32970-6

APA

Sokolovskii, G. S., Melissinaki, V., Fedorova, K. A., Dudelev, V., Losev, S. N., Bougrov, V. E., Sibbett, W., Farsari, M., & Rafailov, E. U. (2018). 3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation. Scientific Reports, 8, [14618]. https://doi.org/10.1038/s41598-018-32970-6

Vancouver

Sokolovskii GS, Melissinaki V, Fedorova KA, Dudelev V, Losev SN, Bougrov VE et al. 3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation. Scientific Reports. 2018 Oct 2;8. 14618. https://doi.org/10.1038/s41598-018-32970-6

Author

Sokolovskii, Grigorii S. ; Melissinaki, Vasileia ; Fedorova, Ksenia A. ; Dudelev, Vladislavv ; Losev, Sergey N. ; Bougrov, Vladislav E. ; Sibbett, Wilson ; Farsari, Maria ; Rafailov, Edik U. / 3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation. In: Scientific Reports. 2018 ; Vol. 8.

Bibtex - Download

@article{518f3ab225984376b0bfb916429189b4,
title = "3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation",
abstract = "Multimode high-power laser diodes suffer from inefficient beam focusing, leading to a focal spot 10-100 times greater than the diffraction limit. This inevitably restricts their wider use in 'direct-diode' applications in materials processing and biomedical photonics. We report here a 'super-focusing' characteristic for laser diodes, where the exploitation of self-interference of modes enables a significant reduction of the focal spot size. This is achieved by employing a conical microlens fabricated on the tip of a multimode optical fibre using 3D laser nano-printing (also known as multi-photon lithography). When refracted by the conical surface, the modes of the fibre-coupled laser beam self-interfere and form an elongated narrow focus, usually referred to as a 'needle' beam. The multiphoton lithography technique allows the realisation of almost any optical element on a fibre tip, thus providing the most suitable interface for free-space applications of multimode fibre-delivered laser beams. In addition, we demonstrate the optical trapping of microscopic objects with a super-focused multimode laser diode beam thus rising new opportunities within the applications sector where lab-on-chip configurations can be exploited. Most importantly, the demonstrated super-focusing approach opens up new avenues for the 'direct-diode' applications in material processing and 3D printing, where both high power and tight focusing is required.",
author = "Sokolovskii, {Grigorii S.} and Vasileia Melissinaki and Fedorova, {Ksenia A.} and Vladislavv Dudelev and Losev, {Sergey N.} and Bougrov, {Vladislav E.} and Wilson Sibbett and Maria Farsari and Rafailov, {Edik U.}",
note = "EUR was partially supported by Grant of Russian Ministry of Science and Education (Grant No. 18-15-00172).",
year = "2018",
month = oct,
day = "2",
doi = "10.1038/s41598-018-32970-6",
language = "English",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature publishing group",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - 3D laser nano-printing on fibre paves the way for super-focusing of multimode laser radiation

AU - Sokolovskii, Grigorii S.

AU - Melissinaki, Vasileia

AU - Fedorova, Ksenia A.

AU - Dudelev, Vladislavv

AU - Losev, Sergey N.

AU - Bougrov, Vladislav E.

AU - Sibbett, Wilson

AU - Farsari, Maria

AU - Rafailov, Edik U.

N1 - EUR was partially supported by Grant of Russian Ministry of Science and Education (Grant No. 18-15-00172).

PY - 2018/10/2

Y1 - 2018/10/2

N2 - Multimode high-power laser diodes suffer from inefficient beam focusing, leading to a focal spot 10-100 times greater than the diffraction limit. This inevitably restricts their wider use in 'direct-diode' applications in materials processing and biomedical photonics. We report here a 'super-focusing' characteristic for laser diodes, where the exploitation of self-interference of modes enables a significant reduction of the focal spot size. This is achieved by employing a conical microlens fabricated on the tip of a multimode optical fibre using 3D laser nano-printing (also known as multi-photon lithography). When refracted by the conical surface, the modes of the fibre-coupled laser beam self-interfere and form an elongated narrow focus, usually referred to as a 'needle' beam. The multiphoton lithography technique allows the realisation of almost any optical element on a fibre tip, thus providing the most suitable interface for free-space applications of multimode fibre-delivered laser beams. In addition, we demonstrate the optical trapping of microscopic objects with a super-focused multimode laser diode beam thus rising new opportunities within the applications sector where lab-on-chip configurations can be exploited. Most importantly, the demonstrated super-focusing approach opens up new avenues for the 'direct-diode' applications in material processing and 3D printing, where both high power and tight focusing is required.

AB - Multimode high-power laser diodes suffer from inefficient beam focusing, leading to a focal spot 10-100 times greater than the diffraction limit. This inevitably restricts their wider use in 'direct-diode' applications in materials processing and biomedical photonics. We report here a 'super-focusing' characteristic for laser diodes, where the exploitation of self-interference of modes enables a significant reduction of the focal spot size. This is achieved by employing a conical microlens fabricated on the tip of a multimode optical fibre using 3D laser nano-printing (also known as multi-photon lithography). When refracted by the conical surface, the modes of the fibre-coupled laser beam self-interfere and form an elongated narrow focus, usually referred to as a 'needle' beam. The multiphoton lithography technique allows the realisation of almost any optical element on a fibre tip, thus providing the most suitable interface for free-space applications of multimode fibre-delivered laser beams. In addition, we demonstrate the optical trapping of microscopic objects with a super-focused multimode laser diode beam thus rising new opportunities within the applications sector where lab-on-chip configurations can be exploited. Most importantly, the demonstrated super-focusing approach opens up new avenues for the 'direct-diode' applications in material processing and 3D printing, where both high power and tight focusing is required.

U2 - 10.1038/s41598-018-32970-6

DO - 10.1038/s41598-018-32970-6

M3 - Article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 14618

ER -

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