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High-harmonic spectroscopy of aligned molecules

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Title
High-harmonic spectroscopy of aligned molecules
Author(s)
Hyeok Yun; Sang Jae Yun; Gae Hwang Lee; Chang Hee Nam
Publication Date
2017-01
Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v.50, no.2, pp.022001 -
Publisher
IOP PUBLISHING LTD
Abstract
High harmonics emitted from aligned molecules driven by intense femtosecond laser pulses provide the opportunity to explore the structural information of molecules. The field-free molecular alignment technique is an expedient tool for investigating the structural characteristics of linear molecules. The underlying physics of field-free alignment, showing the characteristic revival structure specific to molecular species, is clearly explained from the quantum-phase analysis of molecular rotational states. The anisotropic nature of molecules is shown from the harmonic polarization measurement performed with spatial interferometry. The multi-orbital characteristics of molecules are investigated using high-harmonic spectroscopy, applied to molecules of N2 and CO2. In the latter case the two-dimensional high-harmonic spectroscopy, implemented using a two-color laser field, is applied to distinguish harmonics from different orbitals. Molecular high-harmonic spectroscopy will open a new route to investigate ultrafast dynamics of molecules. © 2017 IOP Publishing Ltd Printed in the UK
URI
https://pr.ibs.re.kr/handle/8788114/3887
ISSN
0953-4075
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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