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X-ray coherent mirage: Generation of phase – matched coherent point source in plasma media by propagated X-ray laser seeded beam

Published online by Cambridge University Press:  30 May 2016

A.Ya. Faenov*
Affiliation:
Institute for Academic Initiatives, Osaka University, Suita 565-0871, Japan Joint Institute for High Temperatures, Russian Academy of Science, Moscow 125412, Russia
T.A. Pikuz
Affiliation:
Joint Institute for High Temperatures, Russian Academy of Science, Moscow 125412, Russia Graduate School of Engineering and Photon Pioneers center, Osaka University, Suita, Osaka 565-087Japan
S.A. Magnitskiy
Affiliation:
Physical Department, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
N. Nagorskiy
Affiliation:
Joint Institute for High Temperatures, Russian Academy of Science, Moscow 125412, Russia
M. Tanaka
Affiliation:
Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
M. Ishino
Affiliation:
Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
M. Nishikino
Affiliation:
Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
M. Kando
Affiliation:
Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
R. Kodama
Affiliation:
Institute for Academic Initiatives, Osaka University, Suita 565-0871, Japan Graduate School of Engineering and Photon Pioneers center, Osaka University, Suita, Osaka 565-087Japan
Y. Kato
Affiliation:
The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka 431-1202, Japan
T. Kawachi
Affiliation:
Kansai Photon Research Institute, National Institutes for Quantum and Radiological Science and Technology, Kizugawa, Kyoto 619-0215, Japan
*
Address correspondence and reprint requests to: A.Ya. Faenov, Institute for Academic Initiatives, Osaka University, Suita, Osaka 565-0871, Japan. E-mail: anatolyf@hotmail.com

Abstract

The overview of the recent results for discovery and investigations of a very exotic phenomenon – optical mirage in the X-ray spectral range – is presented. It was found that the mirage could be created in the form of coherent virtual point source, emerging in the vicinity of the second plasma in two-stage oscillator-amplifier X-ray laser. The X-ray source-mirage, rigidly phased with the initial radiation of generator, occurs only when amplification takes place in the amplifier plasma and leads to the appearance of the interference pattern in the form of concentric rings in the spatial profile of the output X-ray laser beam. The equation describing the emergence of X-ray mirage was found, numerical solution of which shows that its formation is similar to that of the optical mirages observed at propagation of light rays through an inhomogeneously heated air. Obtained results have already demonstrated novel comprehension into the physical nature of amplification of X-ray radiation, opening additional opportunities for X-ray interferometry, holography, and other applications, which require multiple rigidly phased sources of coherent radiation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2016 

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