Photopolymerization with high-order Bessel light beams
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We study photopolymerization with high-order Bessel light beams with phase singularities on-axis. Self-trapping and self-focusing of propagation-invariant light beams in a photopolymer allow the fabrication of extended helical microfibers with a length scale of a centimeter, which is more than an order of magnitude larger than the propagation distance of the Bessel light beams. We show the evolution of microfibers rotating at a rate proportional to the incident optical power, while the periodicity of the helical structures remains constant, irrespective of the laser power. This suggests that optical momentum transfer plays a predominant role in the growth and rotation of such fiber structures.
Arita , Y , Lee , J , Kawaguchi , H , Matsuo , R , Miyamoto , K , Dholakia , K & Omatsu , T 2020 , ' Photopolymerization with high-order Bessel light beams ' , Optics Letters , vol. 45 , no. 14 , pp. 4080-4083 . https://doi.org/10.1364/OL.396012
Copyright: © 2020 Arita et al. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
DescriptionFunding: Core Research for Evolutional Science and Technology (JPMJCR1903); Japan Society for the Promotion of Science (JP16H06507, JP17K19070, JP18H03884); Engineering and Physical Sciences Research Council (EP/P030017/1).
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