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Nanocylinder-array structure greatly increases the soft X-ray intensity generated from femtosecond-laser-produced plasma

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Abstract.

In order to increase the soft X-ray conversion efficiency for the femtosecond-laser-produced plasma, we adopted a nanocylinder-array structure target. Gold nanocylinder-array targets with 70–90 nm cylinder diameter and 100 nm cylinder pitch were made. A continuous smooth soft X-ray spectrum adequate for X-ray absorption spectroscopy was obtained. An around 20-fold soft X-ray (7–20 nm) fluence enhancement compared with a flat-surface gold foil target was obtained when the cylinder height was 18 μm. X-ray (>0.06 keV) pulse duration was 17 ps, which is much shorter than that obtained by using the pre-pulse technique. The X-ray pulse peak intensity was 7-fold higher than that of a gold foil target.

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Authors and Affiliations

  1. NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan (Fax: +81-462/70-2361, E-mail: nisikawa@will.brl.ntt.co.jp), , , , , , JP

    T. Nishikawa, H. Nakano, K. Oguri & N. Uesugi

  2. NTT Photonics Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan, , , , , , JP

    M. Nakao

  3. Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji-shi, Tokyo 192-0397, Japan, , , , , , JP

    K. Nishio & H. Masuda

Authors
  1. T. Nishikawa
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  2. H. Nakano
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  3. K. Oguri
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  4. N. Uesugi
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  5. M. Nakao
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  6. K. Nishio
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  7. H. Masuda
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Additional information

Received: 2 May 2001 / Revised version: 1 June 2001 / Published online: 18 July 2001

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Nishikawa, T., Nakano, H., Oguri, K. et al. Nanocylinder-array structure greatly increases the soft X-ray intensity generated from femtosecond-laser-produced plasma . Appl Phys B 73, 185–188 (2001). https://doi.org/10.1007/s003400100625

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  • DOI: https://doi.org/10.1007/s003400100625

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