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Janulewicz, K. A.*; Kim, C. M.*; Steil, H.*; Kawachi, Tetsuya; Nishikino, Masaharu; Hasegawa, Noboru
X-Ray Lasers and Coherent X-Ray Sources; Development and Applications XI (Proceedings of SPIE, Vol.9589), p.95890N_1 - 95890N_7, 2015/09
Times Cited Count：0 Percentile：0(Optics)We describe measurement results on the polarization state of amplified spontaneous emission signal from a collisionally pumped Ni-like Ag soft X-ray laser with a transient inversion. The result obtained with a calibrated membrane beam splitter as a polarization state (P-state) selector shows that dominance one of the mutually perpendicular electric field components (p- or s-) in the output signal depends on the hydrodynamic state of the plasma medium. Two different hydrodynamic states were referred as a low gain and high gain regimes and the allocated P-states had dominant s- and p-component, respectively. It was also shown that due to correlations between p- and s-components in the process of coherent amplification of noise, correct description of the polarization state requires applying the generalized theory of polarization and formulated there the generalized degree of polarization.
Miura, Yukitoshi
Hikari Kagaku Kenkyu No Saizensen, p.142 - 143, 2005/08
no abstracts in English
Kawano, Yasunori; Chiba, Shinichi; Inoue, Akira*
Proceedings of 30th EPS Conference on Controlled Fusion and Plasma Physics (CD-ROM), 4 Pages, 2003/00
It has been successful to apply CVD diamond plate as the vacuum window for infrared CO
laser interferometry and polarimetry for electron density measurement in the JT-60U tokamak. In comparison with using the conventional zinc-selenide windows, the Faraday rotation component at diamond windows was small as negligible. This resulted in the improvement of the Faraday rotation measurement for a tokamak plasma by polarimetry.
Kawano, Yasunori; Chiba, Shinichi; Inoue, Akira*
Journal of Plasma and Fusion Research SERIES, Vol.3, p.397 - 401, 2000/00
no abstracts in English
laser wave in a tokamak plasmaKawano, Yasunori; Chiba, Shinichi; Shirai, Hiroshi; *; Nagashima, Akira
Review of Scientific Instruments, 70(2), p.1430 - 1434, 1999/02
Times Cited Count：11 Percentile：61.16(Instruments & Instrumentation)no abstracts in English
laser polarimeter for Faraday rotation measurement in tokamak plasmasKawano, Yasunori; Chiba, Shinichi; Shirai, Hiroshi; *; Nagashima, Akira
Review of Scientific Instruments, 70(1), p.714 - 717, 1999/01
Times Cited Count：9 Percentile：56.07(Instruments & Instrumentation)no abstracts in English
Kawano, Yasunori; Nagashima, Akira
Review of Scientific Instruments, 68(11), p.4035 - 4037, 1997/11
Times Cited Count：10 Percentile：62(Instruments & Instrumentation)no abstracts in English
