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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
Subject
high harmonics, molecule, harmonic spectroscopy, femtosecond laser
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
DOI
10.1088/1361-6455/50/2/022001
ISSN
0953-4075
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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