High harmonic generation and ionization effects in cluster targets
نویسندگان
چکیده
منابع مشابه
Channel-closing effects in high-order above-threshold ionization and high-order harmonic generation
The strong-field approximation, amended so as to allow for rescattering, is used to calculate high-order above-threshold ionization (ATI) spectra. The single-active-electron binding potential is modelled by a zero-range potential. The emphasis is on enhancements of groups of ATI peaks that occur for sharply defined laser intensities. The enhancements are traced to multiphoton resonance with the...
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High-harmonic generation is shown to be capable of providing time-resolved information about the particle density of a complex system. As an example, we study numerically high-harmonic generation from expanding xenon clusters in a pump-probe laser scheme, where the pump laser pulse induces the cluster explosion and the probe pulse generates harmonics in the expanding cluster. We show that the h...
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Citation Gkortsas, Vasileios-Marios et al. " Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation. " Physical Review A 84 (2011): n. pag. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article ope...
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Spin-orbit interactions lead to small energy gaps between the outer-most p1/2 and p3/2 shells of noble gas atoms. Strong-field pulses tunnel-ionize an electron out of either shell resulting in spinorbit-driven hole motion. These hole dynamics affect the HHG yield. However, the spectral shape as well as the angular distribution of the HHG emission is not influenced by spin-orbit coupling. We dem...
متن کاملNonadiabatic Effects in High-Harmonic Generation with Ultrashort Pulses.
High-harmonic generation using ultrashort laser pulses with pulse durations 25 to 200 fs is studied theoretically and experimentally. We observe that the harmonic spectrum of argon taken with 25 fs laser pulses contains harmonics up to 20 orders higher than for 100 fs laser pulses with the same intensity. We show that this increase in harmonics is because the atom survives to higher laser inten...
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ژورنال
عنوان ژورنال: High Power Laser Science and Engineering
سال: 2014
ISSN: 2095-4719,2052-3289
DOI: 10.1017/hpl.2014.32