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Abstract
The momentum carried by structured light fields exhibits a rich array of surprising features. In this work, we generate \textit{transverse} orbital angular momentum (TOAM) in the interference field of two parallel and counter-propagating linearly-polarised focused beams, synthesising an array of identical handedness vortices carrying intrinsic TOAM. We explore this structured light field using an optomechanical sensor, consisting of an optically levitated silicon nanorod, whose rotation is a probe of the optical angular momentum, which generates an exceptionally large torque. This simple creation and direct observation of TOAM will have applications in studies of fundamental physics, the optical manipulation of matter and quantum optomechanics.
Original language | English |
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Article number | 2638 |
Journal | Nature Communications |
Early online date | 6 May 2023 |
DOIs | |
Publication status | Published - 6 May 2023 |
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Dive into the research topics of 'Structured transverse orbital angular momentum probed by a levitated optomechanical sensor'. Together they form a unique fingerprint.Projects
- 1 Finished
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PSINFONI: Particle-Surface Interactions in Near Field Optics: Spin-orbit Effects of Light and Optical/Casimir Forces
Rodriguez Fortuno, F. (Primary Investigator)
1/01/2017 → 31/08/2022
Project: Research