scholarly journals New estimation of the curvature effect for the X-ray vacuum diffraction induced by an intense laser field

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Y Seino ◽  
T Inada ◽  
T Yamazaki ◽  
T Namba ◽  
S Asai
Keyword(s):  
Free Electron Laser ◽  
Quantum Electrodynamics ◽  
Laser Field ◽  
Intense Laser ◽  
Curvature Effect ◽  
Intense Laser Field ◽  
X Ray ◽  
High Intensity Laser ◽  
New Formula ◽  
Intensity Laser

Abstract Quantum electrodynamics predicts X-ray diffractions under a high-intensity laser field via virtual charged particles, and this phenomenon is called vacuum diffraction (VD). In this paper, we derive a new formula to describe VD in a head-on collision geometry of an X-ray free-electron laser (XFEL) pulse and a laser pulse. The wavefront curvature of the XFEL pulse is newly considered in this formula. With this formula, we also discuss the curvature effect on VD signals based on realistic parameters at the SACLA XFEL facility.

Measuring Gravitational Effect of Superintense Laser by Spin-Squeezed Bose-Einstein Condensates Interferometer

2021 ◽  
Author(s):  
Eng Boon Ng ◽  
C. H. Raymond Ooi
Keyword(s):  
Gravitational Force ◽  
Einstein Field Equation ◽  
Gravitational Effect ◽  
Atom Interferometer ◽  
Intense Laser ◽  
Squeezing Effect ◽  
Intense Laser Field ◽  
High Intensity Laser ◽  
Bose Einstein ◽  
Intensity Laser

Abstract In this article, we consider an extremely intense laser, enclosed by an atom interferometer. The gravitational potential generated from the high-intensity laser is solved from the Einstein field equation under the Newtonian limit. We compute the strength of the gravitational force and study the feasibility of measuring the force by the atom interferometer. The intense laser field from the laser pulse can induce a phase change in the interferometer with Bose-Einstein condensates. We push up the sensitivity limit of the interferometer with Bose-Einstein condensates by spin-squeezing effect and determine the sensitivity gap for measuring the gravitational effect from intense laser by atom interferometer.

Molecules in high-intensity laser fields

1996 ◽  
Vol 74 (6) ◽  
pp. 1236-1247 ◽  
Author(s):  
T.-T. Nguyen-Dang ◽  
F. Châteauneuf ◽  
S. Manoli
Keyword(s):  
High Order ◽  
Molecular Structures ◽  
Intense Laser ◽  
Intense Laser Field ◽  
Strongly Coupled ◽  
System A ◽  
High Intensity Laser ◽  
Quantized Field ◽  
Quantized Radiation Field ◽  
Intensity Laser

The separability of a dressed molecule, a composite molecule + quantized radiation field system, at high field intensities is examined. Various forms of the Hamiltonian describing the dressed molecule are reviewed and are used to assess the zeroth-order separability of the dressed system. A new high-order adiabatic separation between the strongly coupled quantized field and molecular subsystems is derived. Qualitative manifestations of laser-induced molecular structures are discussed within this high-order adiabatic representation. Key words: dynamics, dressed molecule, intense laser field, adiabatic separation, laser-induced molecular structure.

X-ray absorption in atoms in the presence of an intense laser field

1977 ◽  
Vol 15 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Manoj Jain ◽  
Narkis Tzoar
Keyword(s):  
Laser Field ◽  
Intense Laser ◽  
Intense Laser Field ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Quantum electrodynamics in intense laser fields

1991 ◽  
Vol 9 (2) ◽  
pp. 603-618 ◽  
Author(s):  
W. Becker
Keyword(s):  
Refractive Index ◽  
Electromagnetic Field ◽  
Quantum Electrodynamics ◽  
Laser Field ◽  
Intense Laser ◽  
Intense Laser Fields ◽  
Intense Laser Field ◽  
Electron Positron ◽  
Spacetime Region ◽  
Virtual Pairs

A very intense laser field polarizes the virtual electron-positron pairs that populate the vacuum. This provides for a coupling between different modes of the electromagnetic field, giving rise to effects such as scattering of light by light, a refractive index of the vacuum, vacuum birefringence, etc. Given enough energy in a sufficiently small spacetime region, the virtual pairs can become real, which leads to pair production in the intense field under the action of a third agent. These, as well as related effects, are summarized with respect to their orders of magnitude and conditions under which they might become accessible to experiment. Some other processes that are normally mentioned in this context, such as Thomson (Compton) scattering at high intensities, are considered, too, even though they are unrelated to the vacuum structure of quantum electrodynamics.

Sampling measurement of soft-x-ray-pulse shapes by femtosecond sequential ionization of Kr^+ in an intense laser field

2004 ◽  
Vol 29 (11) ◽  
pp. 1279 ◽  
Author(s):  
Katsuya Oguri ◽  
Tadashi Nishikawa ◽  
Tsuneyuki Ozaki ◽  
Hidetoshi Nakano
Keyword(s):  
Laser Field ◽  
Intense Laser ◽  
Intense Laser Field ◽  
X Ray

scholarly journals Quantum-Optical Spectrometry in Relativistic Laser–Plasma Interactions Using the High-Harmonic Generation Process: A Proposal

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 192
Author(s):  
Theocharis Lamprou ◽  
Rodrigo Lopez-Martens ◽  
Stefan Haessler ◽  
Ioannis Liontos ◽  
Subhendu Kahaly ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Quantum Electrodynamics ◽  
Laser Field ◽  
High Harmonic ◽  
Intense Laser ◽  
Strong Laser Field ◽  
Laser Plasma Interactions ◽  
Strong Laser ◽  
Optical Spectrometry ◽  
Quantum Optical

Quantum-optical spectrometry is a recently developed shot-to-shot photon correlation-based method, namely using a quantum spectrometer (QS), that has been used to reveal the quantum optical nature of intense laser–matter interactions and connect the research domains of quantum optics (QO) and strong laser-field physics (SLFP). The method provides the probability of absorbing photons from a driving laser field towards the generation of a strong laser–field interaction product, such as high-order harmonics. In this case, the harmonic spectrum is reflected in the photon number distribution of the infrared (IR) driving field after its interaction with the high harmonic generation medium. The method was implemented in non-relativistic interactions using high harmonics produced by the interaction of strong laser pulses with atoms and semiconductors. Very recently, it was used for the generation of non-classical light states in intense laser–atom interaction, building the basis for studies of quantum electrodynamics in strong laser-field physics and the development of a new class of non-classical light sources for applications in quantum technology. Here, after a brief introduction of the QS method, we will discuss how the QS can be applied in relativistic laser–plasma interactions and become the driving factor for initiating investigations on relativistic quantum electrodynamics.

Spin dynamics in nonsequential two-photon double ionization of helium in an intense laser field

2011 ◽  
Vol 83 (4) ◽  
Author(s):  
S. Bhattacharyya ◽  
Mina Mazumder ◽  
J. Chakrabarti ◽  
F. H. M. Faisal
Keyword(s):  
Laser Field ◽  
Spin Dynamics ◽  
Double Ionization ◽  
Intense Laser ◽  
Intense Laser Field ◽  
Two Photon
Sign in / Sign up

Export Citation Format

Share Document