Optimal control of attosecond pulse synthesis from high-order harmonic generation

Journal Article · Thu Apr 01 00:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.041802· OSTI ID:20640935

Ben Haj Yedder, A; Le Bris, C; Atabek, O; Chelkowski, S; Bandrauk, A D ^[1]

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1. CERMICS, Ecole Nationale des Ponts et Chaussees, 6 and 8, avenue Blaise Pascal, Cite Descartes, Champs sur Marne, 77455 Marne-La-Vallee Cedex 2 (France)

Numerical solutions of the time-dependent Schroedinger equation for a three-dimensional H atom and an efficient genetic algorithm are used to optimize short intense excitation laser pulses in order to generate high-order harmonics from which we synthesize single attosecond pulses. It is shown that chirping of excitation pulses at intensities {approx}10{sup 14} W/cm{sup 2} and duration of up to {approx}16 fs can lead to synthesis of single attosecond pulses. The optimal excitation pulses and the phases of the generated harmonics are compared with the nonoptimized ones, showing thus the usefulness of genetic algorithm schemes in the search of optimal conditions for synthesizing single attosecond pulses.

• OSTI ID: 20640935
• Journal Information: Physical Review. A, Vol. 69, Issue 4; Other Information: DOI: 10.1103/PhysRevA.69.041802; (c) 2004 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
ALGORITHMS
ATOMS
EXCITATION
HARMONIC GENERATION
HARMONICS
HYDROGEN
LASER RADIATION
NUMERICAL SOLUTION
OPTIMAL CONTROL
PHOTON-ATOM COLLISIONS
PULSES
SCHROEDINGER EQUATION
THREE-DIMENSIONAL CALCULATIONS
TIME DEPENDENCE