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1 April 2020 Improved optical fiber tweezers using 3D printed Fresnel lenses (Conference Presentation)
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Abstract
A new approach of a highly efficient counter propagating optical fiber based tweezers using 3D printed Fresnel lenses at the fiber facets will be presented. In contrast to conventional fiber tip tweezers the emitted beams of the Fresnel lens fibers are converging resulting in a significantly enhanced trapping efficiency in both axial and transverse direction. The used polymer diffractive Fresnel lens structures are fabricated by femtosecond two photo lithography using a commercial system. The measured trapping efficiencies are found to be up to 90 times higher than for similar results using chemically wet-etched fiber tips. A short outlook on further concepts of enhanced optical fiber tweezers based on 3D diffractive structures will also be given.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Asa Asadollahbaik, Simon Thiele, Ksenia Weber, Aashutosh Kumar, Johannes Drozella, Florian Sterl, Alois A. Herkommer, Harald Giessen, and Jochen Fick "Improved optical fiber tweezers using 3D printed Fresnel lenses (Conference Presentation)", Proc. SPIE 11345, Nanophotonics VIII, 1134506 (1 April 2020); https://doi.org/10.1117/12.2559875
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