Optical manipulation of nanoparticles: a review

Dienerowitz, Maria; Mazilu, Michaël; Dholakia, Kishan

doi:10.1117/1.2992045

Cited by 439 publications

(369 citation statements)

References 87 publications

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“…These are the main dynamical properties of electromagnetic waves, which are also preserved in the quantum-mechanical picture of photons 4 . Optical momentum and AM play a crucial role in various light-matter interactions [5][6][7] , including laser cooling [8][9][10] , optical manipulation of atoms or small particles [8][9][10][11][12][13] , and in optomechanical systems 14 .…”

mentioning

confidence: 99%

Extraordinary momentum and spin in evanescent waves

2014

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Momentum and spin represent fundamental dynamic properties of quantum particles and fields. In particular, propagating optical waves (photons) carry momentum and longitudinal spin determined by the wave vector and circular polarization, respectively. Here we show that exactly the opposite can be the case for evanescent optical waves. A single evanescent wave possesses a spin component, which is independent of the polarization and is orthogonal to the wave vector. Furthermore, such a wave carries a momentum component, which is determined by the circular polarization and is also orthogonal to the wave vector. We show that these extraordinary properties reveal a fundamental Belinfante's spin momentum, known in field theory and unobservable in propagating fields. We demonstrate that the transverse momentum and spin push and twist a probe Mie particle in an evanescent field. This allows the observation of 'impossible' properties of light and of a fundamental field-theory quantity, which was previously considered as 'virtual'.

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confidence: 99%

Extraordinary momentum and spin in evanescent waves

2014

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“…Such particularly structured beams are of significant interest for various applications. For example, the hollow beams are useful for the optical trapping of specific specimens that might be repelled and pushed away from the regions of maximum intensity 34 . Low refractive-index particles, such as air bubbles in liquid, and metallic particles at certain frequencies are typically repelled by the bright spot 35,36 .…”

Section: Discussionmentioning

confidence: 99%

Advanced optical characterization of micro solid immersion lens

et al. 2012

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We report on the advanced optical characterizations of microfabricated solid immersion lenses with 2-µm diameter, operating at λ = 642 nm. The main feature, the spot size reduction, has been investigated by applying a focused Gaussian beam of NA = 0.9. Particular illuminating beams, e.g., Bessel-Gauss beams of the zeroth and the first order, a doughnutshape beam and its decompositions, i.e. two-half-lobes beams, have also been used to influence the shape of the immersed focal spot. Detailed optical characterizations have been conducted by measuring the amplitude and phase distributions with a high-resolution interference microscope (HRIM) in volume around the focal spot. The immersion effect of the SiO 2 solid immersion lens leads to a spot-size reduction of approximately 1.5 which agrees well with theory. Particularly shaped incident beams exhibit a comparable size reduction of the immersed spots. Such structured focal spots are of significant interest in optical trapping, lithography, and optical data storage systems.

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“…Such fields are necessary elements of various modern applications aimed at optical trapping, sorting, delivering, selective treatment, positioning and some other precise manipulations with extremely small quantities of matter [4][5][6][7]. In these areas, the dynamical characteristics of optical fields, first of all the spatial distribution of their energy, as well as their momentum and angular momentum (AM), play a crucial role.…”

Section: Introductionmentioning

confidence: 99%

Spin and momentum of the light fields in inhomogeneous dispersive media with application to surface plasmon-polariton waves

Bekshaev

Bliokh²

2018

Ukr. J. Phys. Opt.

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Abstract. Following the recent approach [Phys. Rev. Lett. 119, 073901 (2017); New J. Phys., 19, 123014 (2017)], we refine and accomplish a general scheme for the unified description of momentum and angular momentum of the light fields in complex material media. Equations for the canonical (orbital) and spin linear momenta, as well as the orbital and spin angular momenta are presented for a lossless inhomogeneous dispersive medium in a compact form, which is analogous to the Brillouin relationship for the energy. The results are applied to a surface plasmon-polariton field. The microscopic calculations support the phenomenological expectations. Our refined general scheme describes correctly the known unusual properties of the surface plasmon-polariton associated with transverse spin and magnetization momentum. Moreover, it predicts a singular momentum contribution sharply localized at the metal-dielectric interface, which is confirmed by the microscopic analysis. Our results can be useful for the optical systems employing structured light, especially in microoptics, plasmophotonics, optical sorting and micromanipulation.

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Optical manipulation of nanoparticles: a review

Cited by 439 publications

References 87 publications

Extraordinary momentum and spin in evanescent waves

Extraordinary momentum and spin in evanescent waves

Advanced optical characterization of micro solid immersion lens

Spin and momentum of the light fields in inhomogeneous dispersive media with application to surface plasmon-polariton waves

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