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Related papers: Aberrations in (3+1)D Bragg diffraction using puls…

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In the present work, the dynamic properties of an attractive longitudinal optical force and the applied potential, due to diffraction and dispersion of ultrashort laser pulses, propagating in air at distances of several diffraction and…

Optics · Physics 2026-02-12 Maria-Gabriela Zheleva , A. Dakova , V. Slavchev , L. Kovachev. , D. Dakova

To obtain the most accurate pulse arrival times from radio pulsars, it is necessary to correct or mitigate the effects of the propagation of radio waves through the warm and ionised interstellar medium. We examine both the strength of…

Instrumentation and Methods for Astrophysics · Physics 2016-11-15 R. M. Shannon , J. M. Cordes

Sub-angstrom spatial resolution of electron density coupled with sub-femtosecond temporal resolution is required to directly observe the dynamics of the electronic structure of a molecule after photoinitiation or some other ultrafast…

Delay times in quantum mechanics always represented an intriguing challenge for physicists. Due to the fact that quantum mechanical experiments are, often, hard to be implemented, the possibility to connect delay times with laser lateral…

Quantum Physics · Physics 2022-04-27 Stefano De Leo , Leonardo Solidoro

We experimentally investigate the Bragg reflection of light at one-dimensionally ordered atomic structures by using cold atoms trapped in a laser standing wave. By a fine tuning of the periodicity, we reach the regime of multiple reflection…

Atomic Physics · Physics 2011-06-07 Alexander Schilke , Claus Zimmermann , Philippe W. Courteille , William Guerin

Propagation effects in the interstellar medium and intrinsic profile changes can cause variability in the timing of pulsars, which limits the accuracy of fundamental science done via pulsar timing. One of the best timing pulsars, PSR…

High Energy Astrophysical Phenomena · Physics 2021-10-07 Fang Xi Lin , Hsiu-Hsien Lin , Jing Luo , Robert Main , James McKee , Ue-Li Pen , Dana Simard , Marten H. van Kerkwijk

The understanding of dynamical evolutions of interacting photon pulses in Rydberg atomic ensemble is the prerequisite for realizing quantum devices with such system. We present an approach that efficiently simulates the dynamical processes,…

Quantum Physics · Physics 2016-09-26 Liu Yang , Bing He , Jin-Hui Wu , Zhaoyang Zhang , Min Xiao

Transition to temporal resolution on the order of 1 ps or less raises a number of questions associated with estimation of the accuracy of the dynamic parameters based on the analysis of time-dependent scattering intensity. The use of…

Instrumentation and Detectors · Physics 2017-11-28 A. A. Ischenko , Yu. I. Tarasov , V. L. Popov

In the Gaia era, understanding the effects of the perturbations of the Galactic disc is of major importance in the context of dynamical modelling. In this theoretical paper we extend previous work in which, making use of the epicyclic…

Astrophysics of Galaxies · Physics 2022-02-02 H. Al Kazwini , Q. Agobert , A. Siebert , B. Famaey , G. Monari , S. Rozier , P. Ramos , R. Ibata , S. Gausland , C. Riviere , D. Spolyar

We have experimentally quantified the temporal structural diversity from the coordinate fluctuations of a laser beam propagating through isotropic optical turbulence. The main focus here is on the characterization of the long-range…

Statistical Mechanics · Physics 2017-10-25 Felipe Olivares , Luciano Zunino , Damián Gulich , Darío G. Pérez , Osvaldo A. Rosso

The temporal evolution of an atomic wave packet interacting with object and reference electromagnetic waves is investigated beyond the weak perturbation of the initial state. It is shown that the diffraction of an ultracold atomic beam by…

Atomic Physics · Physics 2009-10-31 A. V. Soroko

We present calculations for the action of laser pulses on vibrational transfer within the H2+ and Na2 molecules in the presence of dissipation due to photodissociation of the molecule. The laser fields perform closed loops surrounding…

Quantum Physics · Physics 2013-06-28 Arnaud Leclerc , Georges Jolicard , John P. Killingbeck

The ambipolar carrier diffusion in bulk GaAs is studied by using an ultrafast pump-probe technique with a high spatial resolution. Carriers with a point-like spatial profile are excited by a tightly focused pump laser pulse. The…

Materials Science · Physics 2011-02-08 Brian A. Ruzicka , Lalani K. Werake , Hassana Samassekou , Hui Zhao

We study the influence of the space and time dispersion on the frequency dependence of the wave vectors of electromagnetic waves propagating in three-dimensional photonic crystals. Two types of structures are considered: media with weak…

Other Condensed Matter · Physics 2007-05-23 F. Bass , V. Freilikher , O. Shefranova

The phenomenon of beam focusing of microwaves in a plasma near a turning-point caustic is discussed in the context of the analytical solution to the Gaussian beam-tracing equations in the 2D linear-layer problem. The location of maximum…

We investigate Rabi oscillation of an atom ensemble in Gaussian spatial distribution. By using the ultrafast laser interaction with the cold atomic rubidium vapor spatially confined in a magneto-optical trap, the oscillatory behavior of the…

Atomic Physics · Physics 2016-06-09 Han-gyeol Lee , Hyosub Kim , Jaewook Ahn

In this report we investigate the macroscopic quantum tunneling of a Bose condensate falling under gravity and scattering on a Gaussian barrier that could model a mirror of far-detuned sheet of light. We analyze the effect of the…

Soft Condensed Matter · Physics 2007-05-23 Luca Salasnich

We present a methodology for the design of optimal Raman beam-splitter pulses suitable for cold atom inertial sensors. The methodology, based on time-dependent perturbation theory, links optimal control and the sensitivity function…

Atomic Physics · Physics 2023-09-01 Nikolaos Dedes , Jack Saywell , Max Carey , Ilya Kuprov , Tim Freegarde

Particle-based representations of radiance fields such as 3D Gaussian Splatting have found great success for reconstructing and re-rendering of complex scenes. Most existing methods render particles via rasterization, projecting them to…

Using a 3D Finite-Difference Time-Domain parallel code, we report on the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, whose spatial distribution is generated by a Molecular Dynamics code;…

Disordered Systems and Neural Networks · Physics 2007-05-23 Claudio Conti , Luca Angelani , Giancarlo Ruocco
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