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Development of a two-color interferometer for observing wide range electron density profiles with a femtosecond time resolution |
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| Authors: | A. Sagisaka A.S. Pirozhkov H. Daido A. Fukumi Z. Li K. Ogura A. Yogo Y. Oishi T. Nayuki T. Fujii K. Nemoto S. Orimo M. Nishiuchi Y. Hayashi M. Mori M. Kado S. Nakamura A. Noda I.W. Choi J.H. Sung D.-K. Ko J. Lee |
| Affiliation: | (1) Advanced Photon Research Center, Japan Atomic Energy Agency, 8-1 Umemidai, Kizu, Kyoto 619-0215, Japan;(2) Division of Optics, P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy prospekt, 119991 Moscow, Russia;(3) National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan;(4) Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196, Japan;(5) Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan;(6) Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju, 500-712, Republic of Korea |
| Abstract: | A two-color interferometer for preformed plasma characterization is developed. We observe the electron density distribution of preformed plasmas on a 5 μm-thick copper target irradiated with a high-intensity Ti:sapphire laser. The two-color interferometer extended the observable electron density region using a fundamental (800 nm) probe beam to cover the lower density region and a second harmonic (400 nm) probe beam to cover the higher density region, simultaneously. This characterization of the electron density distribution of preformed plasmas with femtosecond time resolution significantly contributes to the understanding of high-intensity laser–thin-foil interactions during high-energy electron, ion, and X-ray generation. PACS 52.38.-r; 52.50.Jm; 52.70.-m |
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