Results 31 to 40 of about 117,799 (311)

Thermoelectricity Modeling with Cold Dipole Atoms in Aubry Phase of Optical Lattice

open access: yesApplied Sciences, 2020
We study analytically and numerically the thermoelectric properties of a chain of cold atoms with dipole-dipole interactions placed in an optical periodic potential. At small potential amplitudes the chain slides freely that corresponds to the Kolmogorov-
Oleg V. Zhirov   +2 more
doaj   +1 more source

Mapping atomic trapping in an optical superlattice onto the libration of a planar rotor in electric fields

open access: yesNew Journal of Physics, 2023
We show that two seemingly unrelated problems—the trapping of an atom in an optical superlattice (OSL) and the libration of a planar rigid rotor in combined electric and optical fields (PR) – have isomorphic Hamiltonians.
Marjan Mirahmadi   +3 more
doaj   +1 more source

An accordion superlattice for controlling atom separation in optical potentials

open access: yesNew Journal of Physics, 2023
We propose a method for separating trapped atoms in optical lattices by large distances. The key idea is the cyclic transfer of atoms between two lattices of variable spacing, known as accordion lattices, each covering at least a factor of two in lattice
Simon Wili   +2 more
doaj   +1 more source

Optical properties of a Moiré-lattice photonic crystal fiber with controllable magic angle

open access: yesResults in Physics, 2023
Inspired by the unique electrical properties of bilayer-twisted graphene with moiré superlattice, the light manipulation using photonic moiré structures has attracted tremendous research interest.
Jingmin Zhou   +5 more
doaj   +1 more source

Optical conductivity with holographic lattices [PDF]

open access: yesJournal of High Energy Physics, 2012
We add a gravitational background lattice to the simplest holographic model of matter at finite density and calculate the optical conductivity. With the lattice, the zero frequency delta function found in previous calculations (resulting from translation invariance) is broadened and the DC conductivity is finite.
Horowitz, Gary T   +2 more
openaire   +3 more sources

Formation controllable two-dimensional surface optical lattices

open access: yesJournal of Taibah University for Science, 2023
The evanescent light field created by total internal reflection at a dielectric-vacuum interface has tight spatial confinement and high local intensity.
S. Al-Awfi
doaj   +1 more source

Optical trapping with superfocused high-M2 laser diode beam [PDF]

open access: yes, 2015
Many applications of high-power laser diodes demand tight focusing. This is often not possible due to the multimode nature of semiconductor laser radiation possessing beam propagation parameter M2 values in double-digits.
Kuchinskii, V. I.   +36 more
core   +1 more source

Betatron emission from relativistic electrons in a high intensity optical lattice

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2013
We describe theoretically and numerically the interaction of a laser- or LINAC-accelerated beam of relativistic electrons with a high intensity optical lattice, resulting from the superposition of two transverse laser pulses.
I. A. Andriyash   +3 more
doaj   +1 more source

Optical vortex lattice: an exploitation of orbital angular momentum

open access: yesNanophotonics, 2021
Generally, an optical vortex lattice (OVL) is generated via the superposition of two specific vortex beams. Thus far, OVL has been successfully employed to trap atoms via the dark cores.
Zhu Liuhao   +4 more
doaj   +1 more source

Cryogenic optical lattice clocks

open access: yes, 2015
The accuracy of atomic clocks relies on the superb reproducibility of atomic spectroscopy, which is accomplished by careful control and the elimination of environmental perturbations on atoms. To date, individual atomic clocks have achieved a 10−18 level
Takuya Ohkubo   +4 more
core   +1 more source

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