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https://hdl.handle.net/2440/138652
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Type: | Journal article |
Title: | Optical transport over millimeter distances of a microscopic particle using a novel all-fiber Bessel-like beam generator |
Author: | Lee, H. Lee, M. Lee, H.J. Yoon, J. Dholakia, K. Oh, K. |
Citation: | Optics and Lasers in Engineering, 2023; 165:107549-1-107549-6 |
Publisher: | Elsevier |
Issue Date: | 2023 |
ISSN: | 0143-8166 1873-0302 |
Statement of Responsibility: | Hyeonwoo Lee, Mingyu Lee, Hyeung Joo Lee, Juwon Yoon, Kishan Dholakia, Kyunghwan Oh |
Abstract: | Whilst free space Bessel modes can show particle guidance over extended distances, this has been limited for fiber-based Bessel-like beams which have importance for microfluidic applications. We propose and experimen- tally demonstrate a novel all-fiber Bessel-like beam generator (BBG) that is shown transport a dielectric particle distance in excess of 2mm. This was achieved by optimizing the multimode interference (MMI) in the BBG struc- ture to create a Bessel-like beam of appropriate propagation invariant length (PIL) and judicious choice of laser wavelength suppress thermal effects. By varying the diameter of the region where the MMI occurred we analyzed its impact on PIL and the transverse intensity profile of the Bessel-like beam. Our study paves the way for the fiber optic applications such as novel beam shaping, optical transport, and optical imaging. |
Keywords: | Optical fiber; Bessel-like beam; Photothermal effect; Optical trap and transport; Optical tweezer; Multimode interference |
Description: | Available online 4 March 2023 |
Rights: | ©2023 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.optlaseng.2023.107549 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.optlaseng.2023.107549 |
Appears in Collections: | IPAS publications |
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