Optical trapping with superfocused high-M2 laser diode beam

G.S. Sokolovskii, V.V. Dudelev, V. Melissinaki, S.N. Losev, K.K. Soboleva, A.G. Deryagin, V.I. Kuchinskii, M. Farsari, W. Sibbett, E.U. Rafailov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits. We propose a method of 'interference' superfocusing of high-M2 diode laser beams with a technique developed for the generation of Bessel beams based on the employment of an axicon fabricated on the tip of a 100 μm diameter optical fiber with highprecision direct laser writing. Using axicons with apex angle 140º and rounded tip area as small as 10 μm diameter, we demonstrate 2-4 μm diameter focused laser 'needle' beams with approximately 20 μm propagation length generated from multimode diode laser with beam propagation parameter M2=18 and emission wavelength of 960 nm. This is a few-fold reduction compared to the minimal focal spot size of 11 μm that could be achieved if focused by an 'ideal' lens of unity numerical aperture. The same technique using a 160º axicon allowed us to demonstrate few-μm-wide laser 'needle' beams with nearly 100 μm propagation length with which to demonstrate optical trapping of 5-6 μm rat blood red cells in a water-heparin solution. Our results indicate the good potential of superfocused diode laser beams for applications relating to optical trapping and manipulation of microscopic objects including living biological objects with aspirations towards subsequent novel lab-on-chip configurations.

Original languageEnglish
Title of host publicationLaser resonators, microresonators, and beam control XVII
EditorsAlexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko, Lutz Aschke, Kunihiko Washio
PublisherSPIE
Number of pages7
ISBN (Print)978-1-6284-1433-2
DOIs
Publication statusPublished - 3 Mar 2015
EventLaser Resonators, Microresonators, and Beam Control XVII - San Francisco, CA, United States
Duration: 9 Feb 201512 Feb 2015

Publication series

NameSPIE proceedings
PublisherSPIE
Volume9343
ISSN (Print)0277-786X

Conference

ConferenceLaser Resonators, Microresonators, and Beam Control XVII
CountryUnited States
CitySan Francisco, CA
Period9/02/1512/02/15

Fingerprint

Optical Trapping
Diode Laser
Laser Diode
Semiconductor lasers
Beam Propagation
semiconductor lasers
trapping
Laser
Laser Beam
propagation
Bessel Beam
Propagation
Demonstrate
High Power Diode Laser
Heparin
laser beams
Red Blood Cells
Laser Radiation
needles
Semiconductor Lasers

Bibliographical note

G. S. Sokolovskii ; V. V. Dudelev ; V. Melissinaki ; S. N. Losev ; K. K. Soboleva ; A. G. Deryagin ; V. I. Kuchinskii ; M. Farsari ; W. Sibbett and E. U. Rafailov, "Optical trapping with superfocused high-M2 laser diode beam", Proc. SPIE 9343, Laser Resonators, Microresonators, and Beam Control XVII, 93430Q (March 3, 2015).

Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI: http://dx.doi.org/10.1117/12.2078957

Keywords

  • Bessel beams
  • laser diodes
  • optical manipulation
  • superfocusing

Cite this

Sokolovskii, G. S., Dudelev, V. V., Melissinaki, V., Losev, S. N., Soboleva, K. K., Deryagin, A. G., ... Rafailov, E. U. (2015). Optical trapping with superfocused high-M2 laser diode beam. In A. V. Kudryashov, A. H. Paxton, V. S. Ilchenko, L. Aschke, & K. Washio (Eds.), Laser resonators, microresonators, and beam control XVII [93430Q] (SPIE proceedings; Vol. 9343). SPIE. https://doi.org/10.1117/12.2078957
Sokolovskii, G.S. ; Dudelev, V.V. ; Melissinaki, V. ; Losev, S.N. ; Soboleva, K.K. ; Deryagin, A.G. ; Kuchinskii, V.I. ; Farsari, M. ; Sibbett, W. ; Rafailov, E.U. / Optical trapping with superfocused high-M2 laser diode beam. Laser resonators, microresonators, and beam control XVII. editor / Alexis V. Kudryashov ; Alan H. Paxton ; Vladimir S. Ilchenko ; Lutz Aschke ; Kunihiko Washio. SPIE, 2015. (SPIE proceedings).
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abstract = "Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits. We propose a method of 'interference' superfocusing of high-M2 diode laser beams with a technique developed for the generation of Bessel beams based on the employment of an axicon fabricated on the tip of a 100 μm diameter optical fiber with highprecision direct laser writing. Using axicons with apex angle 140º and rounded tip area as small as 10 μm diameter, we demonstrate 2-4 μm diameter focused laser 'needle' beams with approximately 20 μm propagation length generated from multimode diode laser with beam propagation parameter M2=18 and emission wavelength of 960 nm. This is a few-fold reduction compared to the minimal focal spot size of 11 μm that could be achieved if focused by an 'ideal' lens of unity numerical aperture. The same technique using a 160º axicon allowed us to demonstrate few-μm-wide laser 'needle' beams with nearly 100 μm propagation length with which to demonstrate optical trapping of 5-6 μm rat blood red cells in a water-heparin solution. Our results indicate the good potential of superfocused diode laser beams for applications relating to optical trapping and manipulation of microscopic objects including living biological objects with aspirations towards subsequent novel lab-on-chip configurations.",
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Sokolovskii, GS, Dudelev, VV, Melissinaki, V, Losev, SN, Soboleva, KK, Deryagin, AG, Kuchinskii, VI, Farsari, M, Sibbett, W & Rafailov, EU 2015, Optical trapping with superfocused high-M2 laser diode beam. in AV Kudryashov, AH Paxton, VS Ilchenko, L Aschke & K Washio (eds), Laser resonators, microresonators, and beam control XVII., 93430Q, SPIE proceedings, vol. 9343, SPIE, Laser Resonators, Microresonators, and Beam Control XVII, San Francisco, CA, United States, 9/02/15. https://doi.org/10.1117/12.2078957

Optical trapping with superfocused high-M2 laser diode beam. / Sokolovskii, G.S.; Dudelev, V.V.; Melissinaki, V.; Losev, S.N.; Soboleva, K.K.; Deryagin, A.G.; Kuchinskii, V.I.; Farsari, M.; Sibbett, W.; Rafailov, E.U.

Laser resonators, microresonators, and beam control XVII. ed. / Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Lutz Aschke; Kunihiko Washio. SPIE, 2015. 93430Q (SPIE proceedings; Vol. 9343).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits. We propose a method of 'interference' superfocusing of high-M2 diode laser beams with a technique developed for the generation of Bessel beams based on the employment of an axicon fabricated on the tip of a 100 μm diameter optical fiber with highprecision direct laser writing. Using axicons with apex angle 140º and rounded tip area as small as 10 μm diameter, we demonstrate 2-4 μm diameter focused laser 'needle' beams with approximately 20 μm propagation length generated from multimode diode laser with beam propagation parameter M2=18 and emission wavelength of 960 nm. This is a few-fold reduction compared to the minimal focal spot size of 11 μm that could be achieved if focused by an 'ideal' lens of unity numerical aperture. The same technique using a 160º axicon allowed us to demonstrate few-μm-wide laser 'needle' beams with nearly 100 μm propagation length with which to demonstrate optical trapping of 5-6 μm rat blood red cells in a water-heparin solution. Our results indicate the good potential of superfocused diode laser beams for applications relating to optical trapping and manipulation of microscopic objects including living biological objects with aspirations towards subsequent novel lab-on-chip configurations.

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Sokolovskii GS, Dudelev VV, Melissinaki V, Losev SN, Soboleva KK, Deryagin AG et al. Optical trapping with superfocused high-M2 laser diode beam. In Kudryashov AV, Paxton AH, Ilchenko VS, Aschke L, Washio K, editors, Laser resonators, microresonators, and beam control XVII. SPIE. 2015. 93430Q. (SPIE proceedings). https://doi.org/10.1117/12.2078957