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

Goki Arai, Hiroyuki Hara, Tadashi Hatano, Takeo Ejima, Weihua Jiang, Hayato Ohashi, Shinichi Namba, Atsushi Sunahara, Akira Sasaki, Masaharu Nishikino, Gerry O'Sullivan, Takeshi Higashiguchi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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 × 1014 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.

Original languageEnglish
Pages (from-to)27748-27756
Number of pages9
JournalOptics Express
Volume26
Issue number21
DOIs
Publication statusPublished - 2018 Oct 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Arai, G., Hara, H., Hatano, T., Ejima, T., Jiang, W., Ohashi, H., Namba, S., Sunahara, A., Sasaki, A., Nishikino, M., O'Sullivan, G., & Higashiguchi, T. (2018). Intense water-window soft x-ray emission by spectral control using dual laser pulses. Optics Express, 26(21), 27748-27756. https://doi.org/10.1364/OE.26.027748