5 October 2011 Signal build-up from noise and seeding in plasma-based x-ray lasers
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Abstract
Using the x-ray lasers as amplifiers of ultrashort x-ray pulses has been investigated as a scheme for ultimate light sources. For successful implementation, the characteristics of the scheme should be taken into account in designing the amplifiers. In this paper, the basic physics and characteristics of the scheme were analyzed by using the Maxwell-Bloch equations incorporating time-dependent gain, random spontaneous emission, atomic level degeneracy, and radiation polarization. The variation of the pulse parameters such as energy, bandwidth, pulsewidth, and polarization were explained based on a simple mechanism of pulse growth and also compared to that in the conventional x-ray lasers. These results should be the basic information for a practical implementation of the scheme.
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Chul Min Kim, Karol Janulewicz, Holger Stiel, Masaharu Nishikino, Noboru Hasegawa, Tetsuya Kawachi, Jongmin Lee, "Signal build-up from noise and seeding in plasma-based x-ray lasers", Proc. SPIE 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX, 814008 (5 October 2011); doi: 10.1117/12.893468; https://doi.org/10.1117/12.893468
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