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  Toward High‐Speed Nanoscopic Particle Tracking via Time‐Resolved Detection of Directional Scattering

Beck, P., Neugebauer, M., & Banzer, P. (2020). Toward High‐Speed Nanoscopic Particle Tracking via Time‐Resolved Detection of Directional Scattering. Laser & Photonics Reviews, 2000110. doi:10.1002/lpor.202000110.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-D6B9-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D6BA-7
Genre: Journal Article

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 Creators:
Beck, Paul1, 2, Author              
Neugebauer, Martin1, 2, Author              
Banzer, Peter1, 2, Author              
Affiliations:
1Interference Microscopy and Nanooptics, Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364700              
2Institute of Optics, Information and Photonics, Department of Physics, Friedrich‐Alexander‐University Erlangen‐Nuremberg, Staudtstr. 7/B2, D‐91058 Erlangen, Germany, ou_persistent22              

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Free keywords: directional scattering, tight focusing, ultrafast nanolocalization, vectorbeams
 Abstract: Owing to their immediate relevance for high precision position sensors, a variety of different sub‐wavelength localization techniques has been developed in the past decades. However, many of these techniques suffer from low temporal resolution or require expensive detectors. Here, a method is presented that is based on the ultrafast detection of directionally scattered light with a quadrant photodetector operating at a large bandwidth, which exceeds the speed of most cameras. The directionality emerges due to the position dependent tailored excitation of a high‐refractive index nanoparticle with a tightly focused vector beam. A spatial resolution of 1.1nm and a temporal resolution of 8kHz is reached experimentally, which is not a fundamental but rather a technical limit. The detection scheme enables real‐time particle tracking and sample stabilization in many optical setups sensitive to drifts and vibrations.

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Language(s): eng - English
 Dates: 2020-08-05
 Publication Status: Published online
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Title: Laser & Photonics Reviews
Source Genre: Journal
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Publ. Info: Wiley-VCH GmbH
Pages: - Volume / Issue: - Sequence Number: 2000110 Start / End Page: - Identifier: ISSN: 1863-8880
ISSN: 1863-8899