Optimization of infrared two-color multicycle field synthesis for intense-isolated-attosecond-pulse generation

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.053413· OSTI ID:21528673

Pengfei, Lan; Takahashi, Eiji J; Midorikawa, Katsumi ^[1]

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1. Extreme Photonics Research Group, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

We present the optimization of the two-color synthesis method for generating an intense isolated attosecond pulse (IAP) in the multicycle regime. By mixing an infrared assistant pulse with a Ti:sapphire main pulse, we show that an IAP can be produced using a multicycle two-color pulse with a duration longer than 30 fs. We also discuss the influence of the carrier-envelope phase (CEP) and the relative intensity on the generation of IAPs. By optimizing the wavelength of the assistant field, IAP generation becomes insensitive to the CEP slip. Therefore, the optimized two-color method enables us to relax the requirements of pulse duration and easily produce the IAP with a conventional multicycle laser pulse. In addition, it enables us to markedly suppress the ionization of the harmonic medium. This is a major advantage for efficiently generating intense IAPs from a neutral medium by applying the appropriate phase-matching and energy-scaling techniques.

• OSTI ID: 21528673
• Journal Information: Physical Review. A, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevA.82.053413; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARRIERS
COLOR
INFRARED RADIATION
IONIZATION
LASERS
OPTIMIZATION
PULSES
SAPPHIRE
SCALING
WAVELENGTHS
CORUNDUM
ELECTROMAGNETIC RADIATION
MINERALS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
OXIDE MINERALS
PHYSICAL PROPERTIES
RADIATIONS