Chirp of the single attosecond pulse generated by a polarization gating

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.023813· OSTI ID:20650135

Zenghu, Chang ^[1]

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1. Department of Physics, Kansas State University, Manhattan, Kansas 66506 (United States)

The chirp of the xuv supercontinuum generated by a polarization gating is investigated by comparing three-dimensional nonadiabatic numerical simulations with classical calculations. The origin of the chirp is the dependence of the energy gain by an electron on the return time. The chirp is positive and its value is almost the same as that when a linearly polarized laser is used. Although the 250-eV-wide supercontinuum corresponds to a single attosecond pulse, the shortest duration of the pulse is limited by the chirp. By compensating the positive chirp with the negative group velocity dispersion of a Sn filter, it is predicted that a single 58-as pulse can be generated.

• OSTI ID: 20650135
• Journal Information: Physical Review. A, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevA.71.023813; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COMPUTERIZED SIMULATION
ELECTRONS
EV RANGE
EXTREME ULTRAVIOLET RADIATION
FILTERS
GAIN
MODULATION
OPTICAL DISPERSION
POLARIZATION
PULSES
THREE-DIMENSIONAL CALCULATIONS
VELOCITY
VISIBLE RADIATION