Chirp effect in hard X-ray generation from liquid target when irradiated by femtosecond pulses

Koji Hatanaka, Takahito Ida, Hiroshi Ono, Shin Ichi Matsushima, Hiroshi Fukumura, Saulius Juodkazis, Hiroaki Misawa

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The chirp effect on a X-ray emission intensity from a CsCl aqueous solution jet irradiated by femtosecond pulses was systematically studied. The p-polarized chirped pulses were more efficient as compared with the shortest pulses determined by the spectral bandwidth. The negatively-chirped pulses of approximately 240 fs duration produced up to 1.0 times larger X-ray intensity as compared with the transform-limited 1.60 fs pulses. The angular dependence of X-ray generation can be explained by the resonant absorption. Numerical simulations of electron density evolution due to the avalanche and multi-photon absorption supports qualitatively well the experimental observations.

Original languageEnglish
Pages (from-to)12650-12657
Number of pages8
JournalOptics Express
Volume16
Issue number17
DOIs
Publication statusPublished - 2008 Aug 18

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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