Axis-dependence of molecular high harmonic emission in three dimensions

Limor S. Spector (), Maxim Artamonov, Shungo Miyabe, Todd Martinez, Tamar Seideman, Markus Guehr and Philip H. Bucksbaum
Additional contact information
Limor S. Spector: 382 Via Pueblo Mall, Stanford University
Maxim Artamonov: 2145 Sheridan Road, Northwestern University
Shungo Miyabe: Stanford PULSE Institute, 2575 Sand Hill Road, SLAC National Accelerator Laboratory
Todd Martinez: Stanford PULSE Institute, 2575 Sand Hill Road, SLAC National Accelerator Laboratory
Tamar Seideman: 2145 Sheridan Road, Northwestern University
Markus Guehr: Stanford PULSE Institute, 2575 Sand Hill Road, SLAC National Accelerator Laboratory
Philip H. Bucksbaum: 382 Via Pueblo Mall, Stanford University

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract High-order harmonic generation in an atomic or molecular gas is a promising source of sub-femtosecond vacuum ultraviolet coherent radiation for transient scattering, absorption, metrology and imaging applications. High harmonic spectra are sensitive to Ångstrom-scale structure and motion of laser-driven molecules, but interference from radiation produced by random molecular orientations obscures this in all but the simplest cases, such as linear molecules. Here we show how to extract full body-frame high harmonic generation information for molecules with more complicated geometries by utilizing the methods of coherent transient rotational spectroscopy. To demonstrate this approach, we obtain the relative strength of harmonic emission along the three principal axes in the asymmetric-top sulphur dioxide. This greatly simplifies the analysis task of high harmonic spectroscopy and extends its usefulness to more complex molecules.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4190

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DOI: 10.1038/ncomms4190

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