GENERATION OF HIGH-INTENSITY SINGLE ATTOSECOND PULSE BY USING INHOMOGENEOUS CHIRPED PULSE
Abstract
The generation of high-order harmonics and single attosecond pulses from H2+ has been theoretically investigated beyond the Born-Oppenheimer approximations. It is found that with the introduction of the inhomogeneous effects of the laser field in frequency and space, not only the harmonic cutoff can be remarkably enhanced, but also the single short quantum path can be selected. Further, with the increase of the initial vibrational state and by properly adding a terahertz controlling field, the harmonic yield can be enhanced by 2.5 orders of magnitude, showing a high-intensity supercontinuum with the bandwidth of 511 eV. As a result, four single attosecond pulses shorter than 28 as can be produced. Moreover, the present scheme can also be achieved in the multi-cycle pulse duration, which is much better for practical application.
About the Authors
L. Q. Feng
College of Science, Liaoning University of Technology; Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Russian Federation
Russian Federation
R. S. Castle
College of Science, Liaoning University of Technology; Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Russian Federation
Russian Federation
R. . Feng
College of Science, Liaoning University of Technology
Russian Federation
Russian Federation
H. . Liu
College of Science, Liaoning University of Technology
Russian Federation
Russian Federation
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Review
For citations:
Feng L.Q., Castle R.S., Feng R., Liu H. GENERATION OF HIGH-INTENSITY SINGLE ATTOSECOND PULSE BY USING INHOMOGENEOUS CHIRPED PULSE. Zhurnal Prikladnoii Spektroskopii. 2018;85(5):853(1)-853(13). (In Russ.)
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