Results 11 to 20 of about 42,000 (191)

Coherent beam superposition of ten diode lasers with a Dammann grating [PDF]

, 2010
We demonstrate the use of a binary diffractive optical element in a very simple setup to convert the multilobed beam from a low fill factor array of coherent laser diodes into a quasi-Gaussian beam.
de Rossi, Sébastien, Emaury, Florian, Georges, Patrick, Lucas-Leclin, Gaëlle, Mercier, Raymond, Paboeuf, David   +5 more
core   +2 more sources

On the dragging of light by a rotating medium [PDF]

, 2007
When light is passing through a rotating medium the optical polarization is rotated. Recently, it has been reasoned that this rotation applies also to the transmitted image.
Barnett, Stephen M., Götte, Jörg B., Padgett, Miles   +2 more
core   +2 more sources

Common topological charge of several similar off-axis vortex light beams of arbitrary rotationally symmetric shape

Компьютерная оптика
We investigate the topological charge of superposition of parallel identical vortex beams of arbitrary shape – either Laguerre-Gaussian beams or Bessel-Gaussian beams or some other vortex beams with a rotationally symmetric intensity distribution.
A.A. Kovalev, V.V. Kotlyar, A.G. Nalimov
doaj   +1 more source

Geometrical Optics of Beams with Vortices: Berry Phase and Orbital Angular Momentum Hall Effect

, 2006
We consider propagation of a paraxial beam carrying the spin angular momentum (polarization) and intrinsic orbital angular momentum (IOAM) in a smoothly inhomogeneous isotropic medium.
A. Bohm, A. W. Snyder, F. I. Fedorov, Konstantin Yu. Bliokh, M. V. Berry, N. N. Punko, N. N. Punko, S. I. Vinnitski, W. Nasalski   +8 more
core   +1 more source

Theory and applications of free-electron vortex states

, 2017
Both classical and quantum waves can form vortices: with helical phase fronts and azimuthal current densities. These features determine the intrinsic orbital angular momentum carried by localized vortex states.
Alonso, M. A., Bliokh, K. Y., Béché, A., Clark, L., Guzzinati, G., Ivanov, I. P., Juchtmans, R., Nori, F., Schattschneider, P., Van Boxem, R., Verbeeck, J.   +10 more
core   +1 more source

Quantum phase transition and engineering in two-component BEC in optical lattices [PDF]

, 2003
In this paper we review recent progress in studying quantum phase transitions in one- and two-component Bose-Einstein condensates (BEC) in optical lattices.
Yang C. N., Yong-Shi Wu
core   +2 more sources

A New Method to Measure the Electron Beam Energy Spectrum [PDF]

مجله علوم و فنون هسته‌ای, 2014
An innovative method has been used to calculate electron beam energy spectrum using depth-dose curve. The depth-dose distributions of the electron beam with different primary energies emerging from the electron accelerator were measured in water phantom ...
F Ziaie, M Amini, S. M Hashemi
doaj  

Electron vortex beams in a magnetic field: A new twist on Landau levels and Aharonov-Bohm states

, 2012
We examine the propagation of the recently-discovered electron vortex beams in a longitudinal magnetic field. We consider both the Aharonov-Bohm configuration with a single flux line and the Landau case of a uniform magnetic field.
A. Tonomura, A. E. Siegman, C. Cohen-Tannoudji, C. Kittel, L. D. Landau, M. De Graef, M. P. Marder   +6 more
core   +3 more sources

Creating an Array of Parallel Vortical Optical Needles

Photonics
We propose a method for creating parallel Bessel-like vortical optical needles with an arbitrary axial intensity distribution via the superposition of different cone-angle Bessel vortices.
Paulius Šlevas, Sergej Orlov
doaj   +1 more source

Quantum interference in optical fields and atomic radiation

, 2001
We discuss the connection between quantum interference effects in optical beams and radiation fields emitted from atomic systems. We illustrate this connection by a study of the first- and second-order correlation functions of optical fields and atomic ...
AGARWAL G. S., AKRAM U., DIRAC P. A. M., FICEK Z., GLAUBER R. J., MANDEL L., MOMPART J., S. SWAIN, SCULLY M. O., WALLS D. F., Z. FICEK   +10 more
core   +1 more source