Notes
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Effects of carrier envelope phase on single shot XUV super continuum generation
  • Mahendra Man Shakya, Steve Gilbertson, Chris Nakamura, Chengquan Li, Eric Moon, Zuoliang Duan, Janson Tacket, Shambhu Ghimire and Zenghu Chang
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Our Goal
  • To study dynamics of electron in atoms and molecules using pump-probe technique with the pulse as short as 25 attosecond (one atomic unit) generated from plateau region of XUV spectrum.
  • To Study effect of CE phase change on the dynamics of electrons in atoms.
  • To determine the absolute CE phase from XUV Spectrum




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What is the advantage of XUV single shot over f-2f spectrometer ?
  • f-2f set up measures the relative CE phase change .
  • But it is possible to determine absolute phase from XUV by investigating shot to shot variation of CE phase with polarization gated input.
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Major problem: Less number of photons
  • Phase Matched Pressure.


  • Small Diverging Angle of XUV


  • Aluminum Filter Shield (Design)
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Summary
  • Dependence of the photon flux of polarization gated high harmonics on the target gas pressure was investigated.
  • Highest number of photons was estimated to be ~104 , which was enough to run single shot experiment.
  • We observed effect of CE phase on XUV spectra, which could be applied as a “phase meter”.


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