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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Potential for ultrafast dynamic chemical imaging with few-cycle infrared lasers

Focus on Attosecond Physics

Toru Morishita1,2,3, Anh-Thu Le1, Zhangjin Chen1 and C D Lin1

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Part of Focus on Attosecond Physics

We studied the photoelectron spectra generated by an intense few-cycle infrared laser pulse. By focusing on the angular distributions of the back rescattered high energy photoelectrons, we show that accurate differential elastic scattering cross-sections of the target ion by free electrons can be extracted. Since the incident direction and the energy of the free electrons can be easily changed by manipulating the laser's polarization, intensity and wavelength, these extracted elastic scattering cross-sections, in combination with more advanced inversion algorithms, may be used to reconstruct the effective single-scattering potential of the molecule, thus opening up the possibility of using few-cycle infrared lasers as powerful table-top tools for imaging chemical and biological transformations, with the desired unprecedented temporal and spatial resolutions.


PACS

42.55.Vc X- and gamma-ray lasers

82.80.-d Chemical analysis and related physical methods of analysis

42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation

87.63.L- Visual imaging

41.60.Cr Free-electron lasers

Subjects

Accelerators, beams and electromagnetism

Medical physics

Optics, quantum optics and lasers

Chemical physics and physical chemistry

Dates

Issue 2 (February 2008)

Received 14 September 2007

Published 29 February 2008



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