Hard x-ray generation by low energy, tightly focused laser pulses

K. Takano, K. Nemoto, T. Nayuki, Y. Oishi, T. Fujii, A. Zhidkov, E. Hotta, M. Todoriki, S. Hasegawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The interaction of λ2 laser pulses with plasma is studied to scale the high-field physics from high power laser systems to low-energy, high-repetition-rate lasers. For this purpose, 20 mJ, 40 fs Ti:sapphire laser pulses were focused in a spot of 2.2×2.3 μm2 with a maximum intensity of I∼ 1019 W cm2. Efficient generations of energetic electrons (∼1 MeV) and hard x-rays with energies of over 100 keV were obtained by irradiating the low-energy, tightly focused laser pulses on a massive Cu target.

Original languageEnglish
Article number251502
JournalApplied Physics Letters
Volume92
Issue number25
DOIs
Publication statusPublished - 2008 Jul 4
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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  • Cite this

    Takano, K., Nemoto, K., Nayuki, T., Oishi, Y., Fujii, T., Zhidkov, A., Hotta, E., Todoriki, M., & Hasegawa, S. (2008). Hard x-ray generation by low energy, tightly focused laser pulses. Applied Physics Letters, 92(25), [251502]. https://doi.org/10.1063/1.2945283