Compensation of electron wavepacket spreading with linearly chirped pulses; theoretical analysis

Autor:	Jean-Christophe Delagnes, M. A. Bouchene
Rok vydání:	2002
Předmět:	Physics Wave packet Electron Condensed Matter Physics Kinetic energy Laser Atomic and Molecular Physics and Optics law.invention Ion law Position (vector) Physics::Atomic and Molecular Clusters Coulomb Physics::Atomic Physics Atomic physics Quantum
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 35:1819-1830
ISSN:	1361-6455 0953-4075
Popis:	We investigate in this paper the properties of electron wavepackets created in the continuum by ultrashort pulses, linearly chirped. We consider alkali atoms, where complete quantum calculations can be carried out. The spreading of the wavepacket is radial and mainly due to free propagation, except for very low kinetic energy where Coulomb interaction has to be considered. We show that the wavepacket can be focused into a position located at macroscopic distances far from the ion core. Distances as large as several centimetres are obtained for standard values of laser parameters. Moreover, we derive the conditions where the wavepacket is temporally optimally focused. Finally, we study several characteristics of the wavepacket, such as the temporal divergence (in ps cm-1) and the temporal profile, when the focusing is not maximum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eec39e6e131cb9b694051c25b600d0f1 https://doi.org/10.1088/0953-4075/35/8/302 Zobrazit plný text záznamu