Interfering Bessel beams for optical micromanipulation

Abstract

We examine the properties of interfering high-order Bessel beams. We implement an experimental setup that allows us to realize these interferograms, using interfering Laguerre-Gaussian beams and an axicon. We demonstrate the use of such beams for controlled rotation of microscopic particles in optical tweezers and rotators. The self-healing properties of interfering Bessel beams allow the simultaneous manipulation and rotation of particles in spatially separated sample cells.

Self-healing of quantum entanglement after an obstruction

“…Bessel beams represent a class of nominally propagation-invariant solutions to the Helmholtz equation 26 and have been extensively investigated to date 27 . A laboratory approximation to these fields, BG beams, has similar properties over finite distances 28 , including their ability to reconstruct both in amplitude and phase after encountering an obstruction 24,25 . Although this property has been studied using classical light and single photons 29 , it may also be applicable in quantum processes.…”

“…1). However, those plane waves that bypass the obstruction will again interfere to form a BG beam 24,25 . The distance after which the field will recover is given by…”

“…It is well known that BG beams have the ability to self-heal after encountering an obstruction 24,25 . An obstruction placed in the path of one of the down-converted photons introduces an optical loss such that the OAM entanglement, as witnessed by the Clauser Horne Shimony Holt (CHSH) inequality, is obscured.…”

Localized Bessel Beams: Basic Properties and Emerging Communication Applications

“…Most of existing works in the literature are mainly focused on the generation of Bessel beams in the optical regime, through the adoption of annular slit, axicons, or lasing devices [5][6][7][8][9], while much less results exist in the microwave regime.…”

Coherent transport and concentration of particles in optical traps using varying transverse beam profiles

“…Moreover, beams have been equipped with orbital angular momentum thus allowing trapped particles to be turned [21] and, also, to use this freedom for quantum information coding [22]. Finally, tilted reflecting light sheets together with gravity have been used to implement atomic billiards [23].…”