Field-free alignment of molecules observed with high-order harmonic generation

High-order harmonic generation is demonstrated to provide a sensitive way for an extensive study of dynamic processes in the field-free alignment of strong-field-induced molecular rotational wave packets. The time-dependent harmonic signal observed from field-free-aligned N2, O2, and CO2 has been fo...

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Bibliographic Details
Published inPhysical review letters Vol. 95; no. 24; p. 243903
Main Authors Miyazaki, K, Kaku, M, Miyaji, G, Abdurrouf, A, Faisal, F H M
Format Journal Article
LanguageEnglish
Published United States 09.12.2005
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Summary:High-order harmonic generation is demonstrated to provide a sensitive way for an extensive study of dynamic processes in the field-free alignment of strong-field-induced molecular rotational wave packets. The time-dependent harmonic signal observed from field-free-aligned N2, O2, and CO2 has been found to include two sets of beat frequency for pairs of coherently populated rotational states. One of them is the well-known frequency component characterizing the field-free alignment of molecules, and the other is ascribed to the beat that arises from coherence embedded in the wave packet. We discuss the effect of each frequency component on the revival signal observed with the harmonic generation.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.95.243903