Coherent control of broadband isolated attosecond pulses in a chirped two-color laser field
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
A theoretical investigation is presented that uses a strong two-color laser field composed of a linearly chirped fundamental (900 nm) and its subharmonic (1800-nm) laser pulses to control coherently the broadband isolated attosecond pulses in high-order harmonic generations. After the subharmonic field is added, the intrinsic chirp of harmonic emission can be reduced significantly, and consequently, the temporal synchronization of harmonic emission with different photon energies at the level of the single-atom response can be realized. In addition, the scheme is robust against the carrier envelope phase variation to produce a twin pulse of stable sub-100-as duration, and the relative intensity of the twin pulses can be changed just by adjusting the relative time delay of the two driving pulses, which is of benefit in general pump-probe experiments.
- OSTI ID:
- 21408461
- Journal Information:
- Physical Review. A, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevA.81.033428; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ATOMS
CARRIERS
COLOR
CONTROL
EMISSION
HARMONIC GENERATION
LASER RADIATION
LASERS
PHOTONS
PROBES
PULSES
PUMPS
SYNCHRONIZATION
TIME DELAY
VARIATIONS
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUIPMENT
FREQUENCY MIXING
MASSLESS PARTICLES
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS