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At laser intensities above 1023W/cm2 the interaction of a laser with a plasma is qualitatively different to the interactions at lower intensities. In this intensity regime solid targets start to become relativistically underdense, gamma-ray…

Plasma Physics · Physics 2015-06-18 C. S. Brady , C. P. Ridgers , T. D. Arber , A. R. Bell

The Gamma Factory (GF) is an ambitious proposal, currently explored within the CERN Physics Beyond Colliders program, for a source of photons with energies up to $\approx 400\,$MeV and photon fluxes (up to $\approx 10^{17}$ photons per…

The Gamma Factory (GF) initiative aims at the construction of a unique experimental tool exploiting resonant interaction of light with ultra-relativistic partially stripped ions (PSI) stored in circular accelerators at CERN. Resonant…

Atomic Physics · Physics 2022-05-31 J. Bieroń , M. W. Krasny , W. Płaczek , S. Pustelny

An optics-free method is proposed to generate X-ray radiation with spatially variant states of polarization via an afterburner extension to a Free Electron Laser (FEL). Control of the polarization in the transverse plane is obtained through…

Accelerator Physics · Physics 2020-08-26 Jenny Morgan , Erik Hemsing , Brian W. J. McNeil , Alison Yao

Conditions to generate high-purity entangled vacuum-evacuated coherent states ($|0>|\alpha>^0 - |-\alpha>^0 |0>$ were studied for two cascade-placed beam splitters, with one squeezed state input and two coherent state inputs whenever a…

Quantum Physics · Physics 2015-12-02 Sun-Hyun Youn

We develop a model of the generation of coherent radio emission in the Crab pulsar, magnetars and Fast Radio Bursts (FRBs). Emission is produced by a reconnection-generated beam of particles via a variant of Free Electron Laser (FEL)…

High Energy Astrophysical Phenomena · Physics 2022-08-09 Maxim Lyutikov

The extreme nonlinear optical process of high-harmonic generation (HHG) makes it possible to map the properties of a laser beam onto a radiating electron wavefunction, and in turn, onto the emitted x-ray light. Bright HHG beams typically…

An integrated coherent matter wave circuit is a single device, analogous to an integrated optical circuit, in which coherent de Broglie waves are created and then launched into waveguides where they can be switched, divided, recombined, and…

Quantum Gases · Physics 2015-10-21 C. Ryu , M. G. Boshier

We describe a method for producing high power, coherent x-ray pulses from a free electron laser with femtosecond scale periodic temporal modulation of the polarization vector. This approach relies on the generation of a temporal intensity…

Accelerator Physics · Physics 2020-12-30 Nicholas Sudar , Ryan Coffee , Erik Hemsing

The interaction between an ultrastrong laser and a cone-like target is an efficient approach to generate high power radiations like attosecond pulses and terahertz waves. The object is to study the $\gamma$-ray generation under this…

Plasma Physics · Physics 2022-06-28 Cui-Wen Zhang , Yi-Xuan Zhu , Jian-Feng Lv , Bai-Song Xie

Observing multiphoton electron-positron pair production (the nonlinear Breit-Wheeler process) requires high-energy $\gamma$ rays to interact with strong electromagnetic fields. In order for these observations to be as precise as possible,…

High Energy Physics - Phenomenology · Physics 2024-11-14 Daniel Seipt , Mathias Samuelsson , Tom Blackburn

The creation of nanoscale lasers that operate above a coherent threshold is a challenging problem. We propose a way to circumvent this issue using systems in which a strong coupling regime is achieved between the light and the active…

Although coherent light is usually required for the self-organization of regular spatial patterns from optical beams, we show that peculiar light matter interaction can break this evidence. In the traditional method to record laser-induced…

Generation of circularly-polarized (CP) and linearly-polarized (LP) $\gamma$-rays via the single-shot interaction of an ultraintense laser pulse with a spin-polarized counterpropagating ultrarelativistic electron beam has been investigated…

The polarization of gamma rays produced in strong-field quantum electrodynamics (SFQED) is a fundamental and long-standing prediction, the verification of which has remained elusive, limiting both foundational tests and applications. Here,…

High energy photons can be generated via inverse Compton scattering (ICS) in the collision between energetic electrons and intense laser pulse. The development of laser plasma accelerators promises compact and all-optical gamma-ray sources…

Optics · Physics 2022-02-22 Xuesong Geng , Liangliang Ji , Baifei Shen

Polarized attosecond $\gamma-$rays may offer excitation and hyperfine tracking of reactions relevant to nuclear physics, astrophysics, high-energy physics, etc. However, unfortunately, generation of a feasible and easy-to-deploy source is…

Plasma Physics · Physics 2024-05-13 Li-Jie Cui , Ke-Jia Wei , Chong Lv , Feng Wan , Yousef I. Salamin , Lei-Feng Cao , Jian-Xing Li

Motivated by the PAMELA anomaly in the fluxes of cosmic-ray electron and positron, we study the cosmic gamma-ray induced by the inverse Compton (IC) scattering process in unstable dark matter scenario assuming that the anomaly is due to the…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-19 Koji Ishiwata , Shigeki Matsumoto , Takeo Moroi

The twisted Gaussian Schell Model describes a family of partially coherent beams that present several interesting characteristics, and as such have attracted attention in classical and quantum optics. Recent techniques have been…

We study the conditions for coherent radiation of an electron bunch driven by a counterpropagating strong pulsed electromagnetic plane wave. We derive the spectrum of the coherent radiation and show that it is emitted backwards with respect…

Plasma Physics · Physics 2024-04-17 Evgeny Gelfer , Alexander Fedotov , Ondrej Klimo , Stefan Weber