title: Force mapping of an optical trap using an acousto-optical deflector in a time-sharing regime.
abstract: We suggest and study experimentally a time-sharing protocol for acousto-optical deflectors (AODs) that permits one to map the radial optical trapping force of optical tweezers without using a controllable flux control or an additional beam. Variations of the trapping potential due to modifications of the optical system are easily detected in terms of the force map. The protocol can be used in optical tweezers that already include an AOD without adding new elements in the existing optical system.
authors.affiliation: ICFO—The Institute of Photonic Sciences Av. Carl Friedrich Gauss num 3, 08860 Castelldefels (Barcelona), Spain.
authors.forename: Ignacio A
authors.initials: IA
authors.lastname: Martínez
authors.forename: Dmitri
authors.initials: D
authors.lastname: Petrov