Single attosecond pulse generation in He{sup +} by controlling the instant ionization rate using attosecond pulse trains combined with an intense laser pulse

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Journal of the Optical Society of America. Part B, Optical Physics

DOI:https://doi.org/10.1364/JOSAB.24.001922· OSTI ID:20929770

Xinkui, He; Jia, T Q; Zhang, Jun; Suzuki, M; Baba, M; Kuroda, Hiroto ^[1]; Ozaki, T ^[2]; Ruxin, Li; Zhizhan, Xu ^[3]

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1. The Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)
2. Institute national de la recherche scientifique-centre Energie, Materiaux et Telecommunications, 1650 Lionet-Boulet, Varennes, Quebec J3X 1S2 (Canada)
3. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

High-order harmonics and single attosecond pulse generation by using an infrared laser pulse combined with attosecond pulse trains (APT) interacting with He{sup +} have been investigated. We show that the ionization for different instant time intervals can be controlled by altering the time delay between the APT and the infrared pulse. Consequently, APT can be used as a tool to control the efficiency of high-order harmonics emitted at different times. By choosing appropriate APT and time delay, the driving pulse width for single attosecond pulse generation can be extended up to six optical cycles.

• OSTI ID: 20929770
• Journal Information: Journal of the Optical Society of America. Part B, Optical Physics, Vol. 24, Issue 8; Other Information: DOI: 10.1364/JOSAB.24.001922; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EFFICIENCY
HARMONIC GENERATION
HARMONICS
HELIUM
HELIUM IONS
LASERS
PHOTOIONIZATION
PULSES
TIME DELAY