Microsphere kinematics from the polarization of tightly focused nonseparable light

Berg-Johansen S, Neugebauer M, Aiello A, Leuchs G, Banzer P, Marquardt C (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 29

Pages Range: 12429-12439

Journal Issue: 8

DOI: 10.1364/OE.419540

Abstract

Recently, it was shown that vector beams can be utilized for fast kinematic sensing via measurements of their global polarization state [Optica 2, 864 (2015)]. The method relies on correlations between the spatial and polarization degrees of freedom of the illuminating field which result from its nonseparable mode structure. Here, we extend the method to the nonparaxial regime. We study experimentally and theoretically the far-field polarization state generated by the scattering of a dielectric microsphere in a tightly focused vector beam as a function of the particle position. Using polarization measurements only, we demonstrate position sensing of a Mie particle in three dimensions. Our work extends the concept of back focal plane interferometry and highlights the potential of polarization analysis in optical tweezers employing structured light.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light Germany (DE)

How to cite

APA:

Berg-Johansen, S., Neugebauer, M., Aiello, A., Leuchs, G., Banzer, P., & Marquardt, C. (2021). Microsphere kinematics from the polarization of tightly focused nonseparable light. Optics Express, 29(8), 12429-12439. https://dx.doi.org/10.1364/OE.419540

MLA:

Berg-Johansen, Stefan, et al. "Microsphere kinematics from the polarization of tightly focused nonseparable light." Optics Express 29.8 (2021): 12429-12439.

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