Toward High-Speed Nanoscopic Particle Tracking via Time-Resolved Detection of Directional Scattering
Beck P, Neugebauer M, Banzer P (2020)
Publication Type: Journal article
Publication year: 2020
Journal
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 (Formula presented.) and a temporal resolution of (Formula presented.) 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.
Authors with CRIS profile
Martin Neugebauer
Lehrstuhl für Experimentalphysik (Optik)
Peter Banzer
Naturwissenschaftliche Fakultät
Involved external institutions
Germany (DE)How to cite
APA:
Beck, P., Neugebauer, M., & Banzer, P. (2020). Toward High-Speed Nanoscopic Particle Tracking via Time-Resolved Detection of Directional Scattering. Laser & Photonics Reviews. https://dx.doi.org/10.1002/lpor.202000110
MLA:
Beck, Paul, Martin Neugebauer, and Peter Banzer. "Toward High-Speed Nanoscopic Particle Tracking via Time-Resolved Detection of Directional Scattering." Laser & Photonics Reviews (2020).
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