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physics.optics2026
Feedback cooling of a levitated nanoparticle in a radially polarized vector beam trap
Felipe Almeida, M. Rademacher, J. M. H. Gosling +1
We demonstrate optical levitation and feedback cooling of a silica nanoparticle (radius = 78~nm) trapped within a radial vector beam (RVB) in high vacuum. Radial vector beams, when…
physics.optics2024
All-optical Saddle Trap
Daniel Tandeitnik, Oscar Kremer, Felipe Almeida +3
The superposition of frequency-shifted Laguerre-Gauss modes can produce a rotating saddle-like intensity profile. When spinning fast enough, the optical forces produced by this str…