Recent Progress in X-Ray Laser Research in JAEA

Kawachi, Tetsuya; Kishimoto, Maki; Kado, M.; Hasegawa, Noboru; Tanaka, Momoko; Ochi, Yoshihiro; Nishikino, Masaharu; Ishino, Masahiko; Imazono, Takashi; Ohba, Toshiyuki; Kunieda, Y.; Faenov, A. Ya.; Pikuz, T. A.; Namikawa, Kazumichi; Namba, Shinichi; Kato, Yoshiaki; Nishimura, Hiroaki; Sarukura, Nobuhiko; Kando, M.; Fukuda, Y.; Kotaki, Hajime; Pirozhkov, Alexander S.; Ma, Jing; Sagisaka, A.; Mori, M.; Koga, James; Bulanov, Sergei V.; Daido, Hiroyuki; Tajima, T.

doi:10.1007/978-1-4020-9924-3_1

Cited by 1 publication

(3 citation statements)

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“…Doppler shifted wavelengths. Just recently an approach towards shorter wavelength X-ray lasers by the frequency up-shift using the reflection from a relativistic plasma mirror, which is called a "flying mirror" was proposed and demonstrated [84][85][86][87]. The use of such a mirror for generating ultra-short coherent X-ray pulses was proposed in [84,85].…”

Section: Towards Sxl At "Water Window" and Beyondmentioning

confidence: 99%

“…The use of such a mirror for generating ultra-short coherent X-ray pulses was proposed in [84,85]. In a proof-of principle experiment [87] the "flying mirror" was formed by a breaking wake field created by an intense laser pulse with 2 TW, 76 fsduration propagating in underdense helium plasma. The source pulse (IR laser pulse) with the duration of 76 fs collided with the plasma mirror in the direction of 45 • with respect to the direction of the propagation of the mirror, as illustrated in Fig.…”

Section: Towards Sxl At "Water Window" and Beyondmentioning

confidence: 99%

“…Reflection of the source pulse by the moving plasma mirror induces the frequency up-shift and pulse shortening by a factor of ∼ 4γ 2 cos(θ/2) due to the double Doppler effect, where γ and θ are the relativistic gamma factor of the flying mirror and the incident angle, respectively. In the "flying mirror" concept the dense shells formed in the electron density in a strongly Figure 19 (online color at www.lphys.org) Spectrum of the reflected 800 nm laser radiation by "flying mirror" [87] nonlinear plasma wake, generated by a short laser pulse (driver), reflect a portion of a counterpropagating laser pulse (source). The reflected radiation is frequency upshifted and focused due to the paraboloidal shape of the shells caused by the relativistic dependence of the plasma frequency on the wake wave amplitude.…”

Section: Towards Sxl At "Water Window" and Beyondmentioning

confidence: 99%

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X-Ray laser: past, present, and future

2009

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Abstract:In this review we concentrate our attention on X-ray laser research and development covering the so called soft Xray region (down to ∼ 10 nm) and the "water window" region (down to 2.3 -4.4 nm). We present the development of soft X-ray lasers (SXLs) and their applications using primarily collisional and recombination schemes. We present the paths towards compact systems and major achievements to date. We discuss conditions for using both schemes to reach the "water window" region. In this discussion we also present another possible schemes based on photo-pumping, inner shell transitions in atoms and ions and "Doppler Compression" of IR laser radiation down to the X-ray region with its intrinsic tunability possibility. A significant part of the review is dedicated to the wide range of applications of SXLs with wavelengths at and above 10 nm. Also discussed is the potential of extending the range of biological applications for the "water window" region.Image of wafer with polysilicon lines on silicon (top: 250 nm, bottom: 100 nm widths of lines)

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