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1 August 2021 On-chip optical tweezers based on free-form optics
Jinsheng Lu, Shaoliang Yu, Vincent Ginis, Simon Kheifets, Soon Wei Daniel Lim, Min Qiu, Tian Gu, Juejun Hu, Federico Capasso
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Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 117981O (2021) https://doi.org/10.1117/12.2594988
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
We introduce a new class of on-chip optical tweezers with high trapping efficiency, compact footprint, and broadband operation by integrating free-form micro-reflectors and micro-lenses to the facets of waveguides to generate the strong three-dimensional optical field gradient for optical trapping. We demonstrate the design, fabrication, and measurement of both reflective and refractive micro-optical tweezers. The reflective tweezers feature a remarkably small trapping threshold power, and the refractive tweezers are handy for multi-particle trapping and inter-particle interaction analysis. This new class of tweezers is promising for on-chip sensing, cell assembly, particle dynamics analysis, and ion trapping.
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Jinsheng Lu, Shaoliang Yu, Vincent Ginis, Simon Kheifets, Soon Wei Daniel Lim, Min Qiu, Tian Gu, Juejun Hu, and Federico Capasso "On-chip optical tweezers based on free-form optics", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 117981O (1 August 2021); https://doi.org/10.1117/12.2594988
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KEYWORDS
Optical tweezers
Freeform optics
Integrated optics
Optical design
Reflectivity
Particles
Photonic integrated circuits
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