Systematic study of high-order harmonic optimal control by temporal pulse shaping of laser pulses

Journal Article · Sat Dec 15 00:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.063811· OSTI ID:21140704

Boyko, O ^[1]; Valentin, C; Mercier, B; Coquelet, Ch; Pascal, V; Papalazarou, E; Rey, G ^[1]; Balcou, Ph ^[1]

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1. Laboratoire d'Optique Applique, ENSTA, Ecole Polytechnique, CNRS, F-91761 Palaiseau (France)

We explore experimentally and numerically the physics underlying the optimization of high-order harmonic generation by intense laser pulses, whose temporal profile is tailored by a learning genetic algorithm. Based on a large set of optimization data obtained under different generation parameters, we show that the algorithm converges toward a class of very special profiles on the leading edge of the pulse. The behavior of the harmonic signal is then compared with theoretical simulations based on the time-dependent Schroedinger equation, allowing one to identify separately the role of microscopic and macroscopic phenomena in the temporal dynamics of high-harmonic generation and optimization.

• OSTI ID: 21140704
• Journal Information: Physical Review. A, Vol. 76, Issue 6; Other Information: DOI: 10.1103/PhysRevA.76.063811; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
HARMONIC GENERATION
LASER RADIATION
OPTIMAL CONTROL
OPTIMIZATION
PULSES
SCHROEDINGER EQUATION
SIMULATION
TIME DEPENDENCE