Pecsi Tudomanyegyetem

University of Pecs

Magyar Tudományos Akadémia Támogatott Kutatócsoportok

Mta Tamogatott Kutatocsoportok Irodaja

Zoltán Tibai

Gábor Almási

János Hebling

László Pálfalvi

Mátyás Mechler

György Tóth

József András FÜLÖP

The present specification relates to accelerating electrically charged particles. Gas is introduced into a vacuum chamber through at least one nozzle which opens into said vacuum chamber. Focusing an ionizing beam into the gas generates a plasma having a spatial distribution determined by the duration and manner of focusing the ionizing beam's laser pulses. Linearly polarized electromagnetic pulses of a wavelength at least ten times the wavelength of the ionizing beam's laser pulses tear electrons off the plasma, wherein said electromagnetic pulses include at most five optical cycles. The tearing-off of electrons is performed along a straight line defined by the resulting electric field strength of the electromagnetic pulses and simultaneously with the tearing-off of electrons, the positively charged particles of the remaining plasma with a net positive total charge are accelerated through exposure to Coulomb electrostatic forces.

Efficient production of high-energy ultrashort ion-, especially proton bunches

The present invention relates to a method and an arrangement to generate a coherent electromagnetic radiation containing at most a few optical cycles in the extreme ultraviolet/vacuum ultraviolet domain. The inventive method comprises the steps of providing an electron package () of relativistic velocity; modulating said electron package () with high intensity laser light () in an undulator () having an undulator period smaller than the undulator period (&#x3bb;u) satisfying the resonance condition, producing thereby an electron package formed of electron microbunches; and passing the electron package () of electron microbunches leaving said undulator () through a static magnetic field, and generating thereby a coherent electromagnetic radiation, wherein said static magnetic field is generated in conformity with the coherent electromagnetic radiation to be achieved. The arrangement comprises means for providing an electron package () of relativistic velocity; means for providing high-intensity laser light (); a first undulator () arranged in the propagation direction of the electron package () of relativistic velocity, said first undulator being adapted to receive the electron package () and the laser light () simultaneously and to induce an interaction thereof, said interaction resulting in the microbunching of the electron package (), wherein the undulator period of said first undulator () being smaller than the undulator period (&#x3bb;u) satisfying the resonance condition; and a second undulator () arranged in the propagation direction of the electron package () after said first undulator (), said second undulator () generating a magnetic field in conformity with the coherent electromagnetic radiation to be generated.

Method and arrangement to generate few optical cycle coherent electromagnetic radiation in the EUV-VUV domain

Growing community of inventors

Kajdacs, Hungary

Zoltán Tibai