Reflection and transmission of twisted light at phase conjugating interfaces

Thakur, Anita; Berakdar, J.

doi:10.1364/oe.20.001301

Cited by 9 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…z 0 is the Rayleigh range, and k is the wave number in vacuum, ϕ 0 is a constant phase, and

f (r, z)

is a real function of

r and z

that vanishes at

z = 0

(and encompasses the Gouy phase and phase‐front radius). In , we studied the propagation and the self‐focusing of this beam. For an atom in OAM beam, we consider the classical equations of motions for the structureless ionic core and one active electron including the electrostatic forces

F_{c}

.…”

Section: Acceleration Of He Atoms In Optical Vorticesmentioning

confidence: 99%

Accelerating, guiding, and sub‐wavelength trapping of neutral atoms with tailored optical vortices

et al. 2017

View full text Add to dashboard Cite

Single neutral atom mechanics is controllable by focused, high‐intensity optical vortices. The intensity‐dependent, laser‐driven motion of the atom's active electrons subsumes to a net transfer of the orbital angular momentum of the light to the neutral atom. The ponderomotive force on these electrons translates so into an unbounded or a bounded radial drift of the atom depending on its initial kinetic energy, as set by the temperature. Appropriate combination of laser beams results in sub‐wavelength, dynamical radial traps for tweezing atoms controllably, an effect that can be exploited for atom guiding, structuring, and lithographic applications.

show abstract

“…z 0 is the Rayleigh range, and k is the wave number in vacuum, ϕ 0 is a constant phase, and

f (r, z)

is a real function of

r and z

that vanishes at

z = 0

F_{c}

.…”

Section: Acceleration Of He Atoms In Optical Vorticesmentioning

confidence: 99%

Accelerating, guiding, and sub‐wavelength trapping of neutral atoms with tailored optical vortices

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Since then, OAM waves have sparked a lot of attention in the field of light and optics Allen, 1994, Gibson et al, 2004). The key features of OAM are not only limited to the material characterization and light manipulation (Thakur and Berakdar, 2012) but also valid for image forming systems, topological charge, optical tweezers, quantum optics, ultra-fast communications, and holography (Yao and Padgett, 2011, Padgett, 2014, Thidé et al, 2007.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Radiation Force of Vortex Electromagnetic wave exerted on a perfect electromagnetic conductor (PEMC) Sphere

Arfan¹,

Ghaffar

Alkanhal³

et al. 2022

KJS publishes peer-review articles in Mathematics, Computer Sci

View full text Add to dashboard Cite

In this manuscript, the electromagnetic (EM) radiation force (RF) exerted on a perfect electromagnetic conductor (PEMC) sphere by a vortex electromagnetic (VEM) wave with spiral phase distribution had been investigated. The analytical formulation of EM fields is being done in the framework of Mie theory, while the field expressions are being modeled considering the features of VEM wave for PEMC sphere. Initially, the incident field coefficients are evaluated using definite integrals. The scattering coefficients are then determined by imposing boundary conditions at the surface of PEMC sphere i.e., at 𝑟=𝑎, leading to a linear system of equations computed via solving matrix. So, a lengthy calculation yields undetermined scattered field coefficients relative to incident field coefficients. The cross-section (𝑄) factors i.e., scattering (𝑄𝑠𝑐𝑎) and extinction (𝑄𝑒𝑥𝑡) have been computed. The influence of sphere size parameter (𝜌) and beam waist radius (𝑤0) versus scattering angle (𝛼°) for the RF along with 𝑄𝑠𝑐𝑎 has been numerically analyzed. As no loss of energy occurs inside PEMC sphere so absorption ((𝑄𝑎𝑏𝑠)=0), by virtue of the energy conservation principle then, 𝑄𝑒𝑥𝑡=𝑄𝑠𝑐𝑎. Under specific condition, we implemented present results on 𝑄𝑠𝑐𝑎 towards light without orbital angular momentum (OAM) i.e., (𝑙=0) and plane wave for the PEMC sphere. The research work has potential applications towards particle manipulation, optical technology, and optical tweezers.

show abstract

“…Recent decades have seen increased interest in the orbital angular momentum (OAM) of light [1][2][3][4], with many differents points of emphasis, including the topological properties of light carrying such angular momentum [5][6][7], conversion from spin to orbital angular momenta [8,9], the relation of angular momenta to the symmetries of relativistic spacetime [10,11], generation of twisted electromagnetic beams [12,13] including at very high frequency [14], propagation of twisted light in media [15][16][17], sorting of light according to OAM [18,19], and corresponding applications in telecommunications [20,21] and quantum information [22,23]. Others have examined the interaction of twisted light with atomic systems [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Short-time emission of higher-angular-momentum photons by atomic transitions

Lei

Debierre

2021

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

The short-time regime of spontaneous light emission by few-electron ions is examined in detail, with a specific emphasis on the angular momentum of the emitted light. It is found that, in general, photons carrying a higher angular momentum are emitted with important probabilities, at short times, in transitions that are not of the electric dipole type. The probability of emission of such photons is found to be parametrically non-negligible in this time regime, and even numerically dominant for some cases. It is also found that, in all time regimes, the emission of electric 2 n+1-pole fields is typically numerically dominant over the emission of magnetic 2 n -pole fields by many orders of magnitude. These results refine and deepen our understanding of the emission of angular momentum-carrying light by simple atomic systems.

show abstract

Reflection and transmission of twisted light at phase conjugating interfaces

Cited by 9 publications

References 24 publications

Accelerating, guiding, and sub‐wavelength trapping of neutral atoms with tailored optical vortices

Accelerating, guiding, and sub‐wavelength trapping of neutral atoms with tailored optical vortices

Electromagnetic Radiation Force of Vortex Electromagnetic wave exerted on a perfect electromagnetic conductor (PEMC) Sphere

Short-time emission of higher-angular-momentum photons by atomic transitions

Contact Info

Product

Resources

About