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Jayendra, Nath BANDYOPADHYAY
복잡계 이론물리 연구단
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Regulating the higher harmonic cutoffs via sinc pulse

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Title
Regulating the higher harmonic cutoffs via sinc pulse
Author(s)
Rambabu Rajpoot; Amol R Holkundkar; Jayendra Nath Bandyopadhyay
Subject
higher harmonic generation, ; attosecond pulse, ; sinc pulse, ; strong-field-approximation, ; TDSE
Publication Date
2020-10
Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v.53, no.20, pp.205404
Publisher
IOP PUBLISHING LTD
Abstract
© 2020 IOP Publishing Ltd. We theoretically investigate the generation of higher harmonics and the construction of a single attosecond pulse (ASP) by means of two oppositely polarized sinc-shaped driver pulses. In comparison to a few-cycle Gaussian pulse of the same energy, here we observe a significant broadening in the bandwidth of the XUV/soft x-ray supercontinuum spectrum in the synthesized pulse. Furthermore, we observe that the harmonic cutoff and its corresponding intensity follow a well-defined scaling with thedelay parameterbetween the two pulses. In principle, this delay can easily be tuned on an optical bench. The typical nature of the synthesized pulse ensures the generation of a single ASP instead of a pulse train. In this case, we obtain a single ASP with a duration of similar to 27 attoseconds in the XUV/soft x-ray regime of the electromagnetic spectrum. Depending on the delay parameter we observe an enhancement in some satellite harmonics. The proposed setup promises a highly tunable source of energetic photons, wherein the energy of the photons can easily be controlled from the XUV to the soft x-ray regime by simply changing the delay between two oppositely polarized sinc-pulses
URI
https://pr.ibs.re.kr/handle/8788114/7608
DOI
10.1088/1361-6455/abacd5
ISSN
0953-4075
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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