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We study Bessel beams of two-level atoms that are driven by a linearly polarized laser field. Starting from the Schroedinger equation, we determine the states of two-level atoms in a plane-wave field respecting propagation directions both…

Quantum Physics · Physics 2013-08-06 Armen G. Hayrapetyan , Oliver Matula , Andrey Surzhykov , Stephan Fritzsche

Methods of enhanced laser cooling of particle beams in storage rings and Robinson's damping criterion are discussed. The dynamics of amplitudes of betatron oscillations and instantaneous orbits of electrons interacting with laser beams…

Classical Physics · Physics 2007-05-23 E. G. Bessonov

We analyze the laser cooling of polarizable particles by continuous dispersive position detection and active feedback. The magnitude of the dissipative force is proportional to the particles' photon scattering rate into the detector, while…

Quantum Physics · Physics 2013-05-29 Vladan Vuletic , Adam T. Black , James K. Thompson

The theory and experiments concerned with the electron-ion thermal relaxation and melting of overheated crystal lattice constitute the subject of this paper. The physical model includes two-temperature equation of state, many-body…

We consider the process of cooling of a heavy particle beam in a co-moving electron beam of low temperature guided by a solenoidal magnetic field. This paper summarizes the main results of theoretical studies of this process conducted by…

Accelerator Physics · Physics 2017-06-02 Yaroslav S. Derbenev

The discovery of nonmagnetic Weyl semimetals (WSMs) in TaAs compounds has triggered lots of efforts in finding its magnetic counterpart. While the direct observation of the Weyl nodes and Fermi arcs in a magnetic candidate through…

Superconductivity · Physics 2020-02-26 Run Yang , Tan Zhang , Liqin Zhou , Yaomin Dai , Zhiyu Liao , Hongming Weng , Xianggang Qiu

Laser excitation has emerged as a means to expose hidden states of matter and promote phase transitions on demand. Such laser induced transformations are often rendered possible owing to the delivery of spatially and/or temporally…

We propose a laser cooling mechanism that leads to a temperature significantly lower than the single-photon recoil limit, about $4\times 10^{-4}\,E_{r}$. This mechanism benefits from sharp and high-contrast spectra which are induced by…

Quantum Physics · Physics 2019-09-04 Vase Moeini , Seyedeh Hamideh Kazemi , Mohammad Mahmoudi

In his paper the heating of the fullerenes by ultra-short laser pulses is investigated. The thermal Heaviside equation is formulated and solved for the Cauchy initial condition The effective thermal relaxation time is calculated.. Key…

General Physics · Physics 2007-05-23 J. Marciak-Kozlowska , Miroslaw kozlowski

Thermally induced particle flow in a charged colloidal suspension is studied in a fluid-mechanical approach. The force density acting on the charged boundary layer is derived in detail. From Stokes' equation with no-slip boundary conditions…

Soft Condensed Matter · Physics 2014-01-31 S. Fayolle , T. Bickel , A. Würger

We perform a quantitative analysis of the cooling dynamics of three-level atomic systems interacting with two distinct lasers. Employing sparse-matrix techniques, we find numerical solutions to the fully quantized master equation in steady…

Atomic Physics · Physics 2009-11-13 Josh W. Dunn , J. W. Thomsen , Chris H. Greene , Flavio C. Cruz

We study the system that two atoms simultaneously interact with a single-mode thermal field via different couplings and different spontaneous emission rates when two-photon process is involved. It is found that we indeed can employ the…

Quantum Physics · Physics 2009-09-29 Y. Q. Guo , L. Zhou , H. S. Song

We consider moduli fields interacting with thermalized relativistic matter. We determine the temperature dependence of their damping rate and find it is dominated by thermal effects in the high temperature regime, i.e. for temperatures…

High Energy Physics - Phenomenology · Physics 2009-11-11 Dietrich Bodeker

This chapter gives a basic introduction to the problem of wake fields created in the beam-surrounding environment and the resulting heating effects of machine components. The concepts are introduced and scaling rules derived that are…

Accelerator Physics · Physics 2015-01-29 B J Holzer

This review represents a detailed and comprehensive discussion of the Thermal Field Theory (TFT) concepts and key results in Yukawa-type theories. We start with a general pedagogical introduction into the TFT in the imaginary- and real-time…

High Energy Physics - Theory · Physics 2021-03-17 Torbjörn Lundberg , Roman Pasechnik

A novel method of ground state laser cooling of trapped atoms utilizes the absorption profile of a three (or multi-) level system which is tailored by a quantum interference. With cooling rates comparable to conventional sideband cooling,…

Quantum Physics · Physics 2010-03-26 F. Schmidt-Kaler , J. Eschner , G. Morigi , C. F. Roos , D. Leibfried , A. Mundt , R. Blatt

A canonical formalism is presented which allows for investigations of quantum radiation induced by localized, smooth disturbances of classical background fields by means of a perturbation theory approach. For massless, non-selfinteracting…

Quantum Physics · Physics 2009-10-31 Ralf Schützhold , Guenter Plunien , Gerhard Soff

Laser excitation in silicon from femto- to pico-second time scales is studied. We assume the Three-Temperature Model (3TM) which describes the dynamics of the distinct quasi-temperatures for electrons, holes, and lattice. Numerical results…

Optics · Physics 2022-04-20 Prachi Venkat , Tomohito Otobe

Generation and amplification of magnetic fields in plasmas is a long-standing topic that is of great interest to both plasma and space physics. The electron Weibel instability is a well-known mechanism responsible for self-generating…

In this paper the possibility of the excitation of collective nuclear motion with attosecond laser pulses is investigated. Following our earlier results (Lasers in Engineering 11 (2001) p. 259) the hyperbolic heat transport for nuclear…

Nuclear Theory · Physics 2007-05-23 J. Marciak-Kozlowska , M. Kozlowski