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초강력 레이저과학 연구단
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Coherent control of extreme ultraviolet emission generated through frustrated tunneling ionization

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Title
Coherent control of extreme ultraviolet emission generated through frustrated tunneling ionization
Author(s)
Yang Hwan Kim; Hyeok Yun; Sung In Hwang; Igor A. Ivanov; Chang Hee Nam; Kyung Taec Kim
Publication Date
2022-08
Journal
NEW JOURNAL OF PHYSICS, v.24, no.8
Publisher
IOP Publishing Ltd
Abstract
Coherent extreme ultraviolet (EUV) line emissions can be generated from an atom excited through frustrated tunneling ionization (FTI). The phase variation of the EUV emission in a generation medium along the propagation direction is a critical parameter that determines the phase-matching condition of this new light source. Here we show that the EUV emission sensitively depends on the intensity and phase of a driving laser pulse and the target position. Angle-resolved EUV spectra measured at different target positions and the carrier-envelope phases of the laser pulse exhibit an intensity modulation, showing similar behavior to that of a long-trajectory high harmonic radiation. The four-step model developed for the FTI emission accurately describes the coherent control of the EUV emission. These findings are essential ingredients for developing coherent extreme ultraviolet sources with high photon flux and for utilizing the FTI emission in time-resolved spectroscopy.
URI
https://pr.ibs.re.kr/handle/8788114/12280
DOI
10.1088/1367-2630/ac81e3
ISSN
1367-2630
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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