Temporal confinement and enhancement of high-order harmonic emission with a synthesized laser field

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.051802· OSTI ID:20982452

Xiong, Hui; Li, Ruxin; Zeng, Zhinan; Zheng, Yinghui; Chen, Xiaowei ^[1]; Peng, Yan; Yang, Xuan; Zeng, Heping ^[2]; Xu, Zhizhan ^[1]

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1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800 (China)
2. Key Laboratory of Optical and Magnetic Resonance Spectroscopy of Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062 (China)

We demonstrated that a synthesized laser field consisting of an intense long (45 fs, multi-optical-cycle) laser pulse and a weak short (7 fs, few-optical-cycle) laser pulse can control the electron dynamics and high-order harmonic generation in argon, and generate extreme ultraviolet supercontinuum towards the production of a single strong attosecond pulse. The long pulse offers a large amplitude field, and the short pulse creates a temporally narrow enhancement of the laser field and a gate for the highest energy harmonic emission. This scheme paves the way to generate intense isolated attosecond pulses with strong multi-optical-cycle laser pulses.

• OSTI ID: 20982452
• Journal Information: Physical Review. A, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevA.75.051802; (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

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
ARGON
CONFINEMENT
ELECTRONS
EMISSION
EXTREME ULTRAVIOLET RADIATION
HARMONIC GENERATION
LASER RADIATION
PULSES