Intense water-window soft x-ray emission by spectral control using dual laser pulses | Zendy

Goki Arai | Zendy; Hiroyuki Hara | Zendy; Tadashi Hatano | Zendy; Takeo Ejima | Zendy; Weihua Jiang | Zendy; Hayato Ohashi | Zendy; Shinichi Namba | Zendy; Atsushi Sunahara | Zendy; Akira Sasaki | Zendy; Masaharu Nishikino | Zendy; G. O’Sullivan | Zendy; Takeshi Higashiguchi | Zendy

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Intense water-window soft x-ray emission by spectral control using dual laser pulses

Author(s) -

Goki Arai,

Hiroyuki Hara,

Tadashi Hatano,

Takeo Ejima,

Weihua Jiang,

Hayato Ohashi,

Shinichi Namba,

Atsushi Sunahara,

Akira Sasaki,

Masaharu Nishikino,

G. O’Sullivan,

Takeshi Higashiguchi

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.027748

Subject(s) - water window , optics , photon , laser , emissivity , materials science , absorption (acoustics) , pulse (music) , physics , radiation , detector

We demonstrate intense emission in the water-window soft x-ray spectral region by controlling the spectral behavior through changing the balance between emissivity and self-absorption in an expanding plasma. The number of photons obtained from a dual laser irradiated target with a 150-ps pre-pulse was maximized at 3.8 × 10 14 photons/sr in λ = 2.34 - 4.38 nm at a pulse separation time of 7 - 10 ns. Enhancement of the number of photons is attributed to efficient coupling with the main laser pulse while maintaining a tiny source size.

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