Topologically Enabled Optical Nanomotors

Ilic, Ognjen; Kaminer, Ido; Zhen, Bo; Miller, Owen D.; Buljan, Hrvoje; Soljačić, Marin

doi:10.1364/cleo_qels.2017.fth1h.3

Cited by 4 publications

(4 citation statements)

References 48 publications

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“…Besides the control of polarization state, amplitude, and phase of waves, PhCSs and metasurfaces have also been great candidates for exploiting optical forces, such as optical trapping, manipulation, and meta-vehicles ( 20 – 27 ). By tailoring the scattering direction and structural chirality, optically pumped vehicles, light sails, and motors for transportation of nanoparticles and space exploration have been proposed recently ( 20 , 21 , 26 , 28 ).…”

Section: Introductionmentioning

confidence: 99%

Exploiting extraordinary topological optical forces at bound states in the continuum

Qin

Shi

et al. 2022

Sci. Adv.

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Polarization singularities and topological vortices in photonic crystal slabs centered at bound states in the continuum (BICs) can be attributed to zero amplitude of polarization vectors. We show that such topological features are also observed in optical forces within the vicinity of BIC, around which the force vectors wind in the momentum space. The topological force carries force topological charge and can be used for trapping and repelling nanoparticles. By tailoring asymmetry of the photonic crystal slab, topological force will contain spinning behavior and shifted force zeros, which can lead to three-dimensional asymmetric trapping. Several off-Γ BICs generate multiple force zeros with various force distribution patterns. Our findings introduce the concepts of topology to optical force around BICs and create opportunities to realize optical force vortices and enhanced reversible forces for manipulating nanoparticles and fluid flow.

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Section: Introductionmentioning

confidence: 99%

Exploiting extraordinary topological optical forces at bound states in the continuum

Qin

Shi

et al. 2022

Sci. Adv.

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“…Recently, new approaches to optical manipulation of objects without a beam-shaping were proposed. Soljacic and coworkers [28] proposed that the motion of a Janus particle with spatially asymmetric absorption can be controlled by changing the incident wavelength. Ilic and Atwater [29] proposed self-stabilizing optical manipulation of macroscopic objects by controlling the anisotropy of the scattered light from the structured object's surface.…”

Section: Introductionmentioning

confidence: 99%

Epsilon-Near-Zero (ENZ)-based Optomechanics

Kiasat¹,

Donato²,

Hinczewski³

et al. 2022

Preprint

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Optomechanics deals with the control and applications of mechanical effects of light that stems from the redistribution of photon momenta in light scattering. Here, we investigate, analytically and numerically, optical forces on polarizable particles in proximity of epsilon-near-zero (ENZ) metamaterials. We look at the general features of the repulsive-attractive optomechanics from the nano to the microscale exploiting different theoretical methods (dipole approximation, finite elements calculations, transition (T-)matrix). We discuss the role of realistic layered materials, as our ENZ substrate, on optical forces and analyze the influence of composition and shape by studying a range of complex particles (dielectric, core-shell, plasmonic ellipsoids). Physical insights into the results are discussed and future research directions are forecasted. Our results provide new possibilities in exploiting engineered materials and surfaces for the manipulation and tailoring of light-induced forces in optomechanics.

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“…Structured light -an optical beam carrying optical angular momentum (OAM) -rapidly became a useful resource for a wide range of applications, from optomechanical manipulations [1,2] to super-resolution imaging [3,4]. In quantum information science it has been used for the generation of hyper-entanglement [5], quantum multiplexing [6], etc.…”

Section: Introductionmentioning

confidence: 99%

Optical angular momentum manipulations in a four-wave mixing process

et al. 2019

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We investigate the spatial and quantum intensity correlations between the probe and Stokes optical fields produced via four-wave mixing in a double-Λ configuration, when both incoming probe and control fields carry non-zero optical orbital angular momentum (OAM). We observed that the topological charge of the generated Stokes field obeyed the OAM conservation law. However, the maximum values and optimal conditions for the intensity squeezing between the probe and Stokes fields were largely independent of the angular momenta of the beams, even when these two fields had significantly different OAM charges. We also investigated the case of a composite-vortex pump field, containing two closely-positioned optical vortices, and showed that the generated Stokes field carried the OAM corresponding to the total topological charge of the pump field, further expanding the range of possible OAM manipulation techniques.

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Topologically Enabled Optical Nanomotors

Cited by 4 publications

References 48 publications

Exploiting extraordinary topological optical forces at bound states in the continuum

Exploiting extraordinary topological optical forces at bound states in the continuum

Epsilon-Near-Zero (ENZ)-based Optomechanics

Optical angular momentum manipulations in a four-wave mixing process

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