Relativistic Nonlinear Electrodynamics: Interaction of Charged Particles with Strong and Super Strong Laser Fields
Hamlet Karo Avetissian
Nov. 2007 · Springer Series in Optical Sciences Boek 120 · Springer Science & Business Media
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Withtheappearanceoflasershavecomerealpossibilitiesofrevealingnum- ous nonlinear phenomena of diverse nature resulting from the interaction of strong electromagnetic ?eld either with matter or with free charged particles. First attempts of investigators, especially experimentalists, were directed - ward studying the processes of interaction of laser radiation with matter, which led to the rapid formation of a new ?eld — Nonlinear Optics. The numerous published monographs on this subject are evidence of that. The situation regarding the processes of interaction of laser radiation with free charged particles (free–free transitions) is di?erent. Whereas the experim- tal results on atomic systems frequently had preceded the theoretical ones, the experimental investigations on free electrons began gathering power only recently. Itisenoughtomentionthatthe?rstexperimentsontheobservation of multiphoton exchange between free electrons and laser radiation started in 1975 (the Cherenkov and bremsstrahlung processes) whereas, due to the progress of Nonlinear Optics, the precision laser spectroscopy of superhigh resolution on atomic systems had already been established. This situation is explained by two objective factors. Whereas the experiments on atoms require only laser devices in common laboratories, the experiments on free electron beams require accelerators of charged particles and laser labora- ries, i. e. , this ?eld is a synthesis of Accelerator and Laser Physics. The second major factor is the smallness of the photon–electron interaction cross section in comparison with the photon–atom one; revealing nonlinear phenomena on free electrons thus requires laser ?elds of relativistic intensities (e. g. , even the observation of the second harmonic in nonlinear Compton scattering).
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Professor Avetissian has over 30 years of experience in the area of Nonlinear Electrodynamics of charged particles and strong laser fields. He is the author of the new nonlinear threshold phenomena in coherent radiation processes, which are potential mechanisms for Laser Accelerators and Free Electron Lasers, and has published more than 100 articles in the most prestigious international scientific journals. For his significant achievements he was awarded several National awards and the President of the Republic Prize for Outstanding Contribution to the Advancement of the Science.
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