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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 12650–12657

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, and Hiroaki Misawa  »View Author Affiliations


Optics Express, Vol. 16, Issue 17, pp. 12650-12657 (2008)
http://dx.doi.org/10.1364/OE.16.012650


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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 10 times larger X-ray intensity as compared with the transform-limited 160 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.

© 2008 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(320.1590) Ultrafast optics : Chirping
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.5400) Other areas of optics : Plasmas

ToC Category:
Ultrafast Optics

History
Original Manuscript: June 4, 2008
Revised Manuscript: July 17, 2008
Manuscript Accepted: July 29, 2008
Published: August 6, 2008

Citation
Koji Hatanaka, Takahito Ida, Hiroshi Ono, Shin-ichi Matsushima, Hiroshi Fukumura, Saulius Juodkazis, and Hiroaki Misawa, "Chirp effect in hard X-ray generation from liquid target when irradiated by femtosecond pulses," Opt. Express 16, 12650-12657 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-17-12650


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