M. Babiker

Optical SAM and spin torque of radially/azimuthally-polarised modes in magneto-optic media

Koray Köksal, M. Babiker, Christian Bohley, Jamal Berakdar

tr, gb, de (code pays fourni par la source)

Quantum Concepts and Techniques in Classical Domains Demonstrated in Bulk Phonons and Plasmons

M. Babiker

The turning point that sparked the initiation of quantum theory was the Planck–Einstein postulate that the energy of a monochromatic radiation field is quantized in terms of photons, and this was followed by the development of the principles of quantum mechanics. Although …

gb (code pays fourni par la source)

Academic procrastination among Sudanese medical students through the lens of gender: a cross-sectional study

W. M. Ahmed, Ahmed Balla M. Ahmed, Nashwa Awad Eltom, Mohamed H. Elbadawi et autres

BACKGROUND: Academic procrastination (AP) refers to the intentional delay of academic tasks despite knowing its negative impact. It is considered a prevailing phenomenon among medical students. Numerous discussions have explored the potential influence of gender on this behavior. This study aimed to …

Soudan (code pays fourni par la source)

Optimizing ESP Performance in High GVF Wells: A Case Study

A. S. Albahri, M. Babiker, A. Aljaradi, Abdulrahman I. Alharthi et autres

Abstract This paper addresses the challenges of artificial lift in gassy formations by revising Electric Submersible Pump (ESP) designs to accommodate unexpected reservoir behavior. Initially targeting a static pressure of 8500 kPa and a productivity index (PI) of 0.05 m³/d/kPa, post-drilling evaluations …

Quantum Concepts and Techniques in Classical Domains: Phonons and Plasmons

M. Babiker

The turning point which sparked the initiation of quantum theory was the Planck-Einstein postulate that the energy of a monochromatic radiation field is quantized in terms of photons and this was followed by the development of the principles of quantum mechanics by …

gb (code pays fourni par la source)

Time dilation effects in micron-size rotating optical Ferris-wheel traps

V. E. Lembessis, Jun Yuan, Koray Köksal, M. Babiker

Advances in lasers and atomic clock technologies have enabled delicate measurements to be made of minute relativistic effects. Here, we propose that such developments should lead to the measurement of relativistic effects involving atoms and molecules in dynamic optical traps. Specifically, we …

sa, gb, tr (code pays fourni par la source)

Magneto-optical polarisation texturing

Koray Köksal, Fatma Tambağ, Jamal Berakdar, M. Babiker

Left and right circularly polarized transverse electromagnetic waves propagate at slightly different speeds in a magnetic material leading to a polarization rotation by an amount proportional to the projection of the magnetic field along the direction of the wave propagation. We show …

Optical forces on atoms subject to higher-order Poincaré vortex modes

Smail Bougouffa, M. Babiker

The interaction of atoms with higher-order Poincar\'e optical vortex modes of order $m\ensuremath{\ge}0$ is explored for light close to resonance with atomic dipole transitions. It is well known that atoms subject to optical vortex modes experience both translational and rotational forces acting …

bd, gb (code pays fourni par la source)

Optical SAM and spin torque of radially/azimuthally-polarised modes in magneto-optic media

Koray Köksal, M. Babiker, Christian Bohley, Jamal Berakdar

gb (code pays fourni par la source)

Gauge and unitary transformations in multipolar quantum optics

M. Babiker

Multipolar quantum optics deals with the interaction of light with matter as a many-body bound system of charged particles where the coupling to electromagnetic fields is in terms of the multipolar electric polarization and magnetization. We describe two transformations applied to the …

gb (code pays fourni par la source)

Magneto-optical polarization texturing

Koray Köksal, Fatma Tambağ, Jamal Berakdar, M. Babiker

Left and right circularly polarized transverse electromagnetic waves propagate at slightly different speeds in a magnetic material leading to a polarization rotation by an amount proportional to the projection of the magnetic field along the direction of the wave propagation. We show …

tr, de, gb (code pays fourni par la source)

Optical forces on atoms subject to higher-order Poincaré vortex modes

Smail Bougouffa, M. Babiker

The interaction of atoms with higher-order Poincaré optical vortex modes of order $m\geq 0$ is explored for light close to resonance with atomic dipole transitions. It is well-known that atoms subject to optical vortex modes experience both translational and rotational forces acting …