Results 11 to 20 of about 868 (97)
Formation controllable two-dimensional surface optical lattices
Journal 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
Effects of electric quadrupole interactions with tunable atomic mirrors
Alexandria Engineering Journal, 2023 Recent studies have involved electric quadrupole effects in atoms interacting with the evanescent mode. This type of surface mode is usually produced by the total internal reflection in a dielectric-vacuum atz=0, and its intensity distribution is very ...
S. Al-Awfi
doaj +1 more source
Generate localized optical vortices by quadrupole transition and twisted light
Journal of Taibah University for Science, 2021 We explain how quadrupole-active atomic interactions be able to be enhanced once the neutral atom interacts with an evanescent winding light modes.
S. Al-Awfi
doaj +1 more source
Enhanced quadrupole effects for atoms in surface spiral beams with a thin dielectric waveguide
Alexandria Engineering Journal, 2022 Recently, some physical research has recognized the coupling of optical phase singularity light with quadrupole-active atomic transitions. We show that a Laguerre-Gaussian beam, when completely internally reflected at the dielectric/vacuum interface, can
S. Al-Awfi
doaj +1 more source
Linking gravitational waves and X-ray phenomena with joint LISA and Athena observations [PDF]
, 2020 The evolution of cosmic structures, the formation and growth of the first black holes and the connection to their baryonic environment are key unsolved problems in astrophysics.
McGee, Sean +2 more
core +2 more sources
Three Different Approaches (Hostile, Mythical, and Admiring) to Nasir Khusraw in the History of Persian Literature [PDF]
Matn/Pizhūhī-i Adabī, 2023 Nasir Khusraw is one of the great and influential figures in the history, culture, and literature of Iran. But because of his political and ideological activity in the dominant religion, some have sometimes deliberately ignored him, and beyond that, some
Hassan Heidarzadeh Sardrud
doaj +1 more source
Active-quadrupole interaction of Bessel beams and their influence on atoms
Journal of Taibah University for Science, 2020 This paper explains how the optical quadrupole interaction between a two-level neutral atom and two counter-propagating non-diffracting Bessel beams can exhibit interesting rotational characteristics.
S. Al-Awfi
doaj +1 more source
Exclusive vs Overlapping Viewers in Media Markets [PDF]
, 2006 This paper investigates competition for advertisers in media markets when viewers can subscribe to multiple channels. A central feature of the model is that channels are monopolists in selling advertising opportunities toward their exclusive viewers, but
A Service Of +3 more
core +8 more sources
International Journal of Endocrinology, Volume 2019, Issue 1, 2019., 2019 Introduction. The blood irisin concentrations may be affected both by exercise and pregnancy. We aimed to determine acute responses in serum irisin after a single exercise session and relationships between exercise‐induced changes in this hormone and lipid profile in pregnancy. Material and Methods. It was an experimental study in 20 Caucasian women in
Anna Szumilewicz +9 more
wiley +1 more source
Twisted-light-induced intersubband transitions in quantum wells at normal incidence [PDF]
, 2013 We examine theoretically the intersubband transitions induced by laser beams of light with orbital angular momentum (twisted light) in semiconductor quantum wells at normal incidence. These transitions become possible in the absence of gratings thanks to
Quinteiro, G. F. +2 more
core +2 more sources