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

doi:10.1364/OE.26.027748

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

Center for Advanced Microscopy and Spectroscopy

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	27748-27756
Number of pages	9
Journal	Optics Express
Volume	26
Issue number	21
DOIs	https://doi.org/10.1364/OE.26.027748
Publication status	Published - 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

Intense water-window soft x-ray emission by spectral control using dual laser pulses. / Arai, Goki; Hara, Hiroyuki; Hatano, Tadashi ; Ejima, Takeo; Jiang, Weihua; Ohashi, Hayato; Namba, Shinichi; Sunahara, Atsushi; Sasaki, Akira; Nishikino, Masaharu; O'Sullivan, Gerry; Higashiguchi, Takeshi.

In: Optics Express, Vol. 26, No. 21, 15.10.2018, p. 27748-27756.

Research output: Contribution to journal › Article

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AU - Ohashi, Hayato

AU - Namba, Shinichi

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