Revealing the Cooper minimum of N_2 by Molecular Frame High-Harmonic Spectroscopy. Bertrand, J., B., Wörner, H., J., Hockett, P., Villeneuve, D., M., & Corkum, P., B. Physical Review Letters, 109(14):143001, American Physical Society, 10, 2012.
Paper
Website doi abstract bibtex Molecular frame high-harmonic spectra of aligned N2 molecules reveal a Cooper-like minimum. By deconvolving the laboratory frame alignment distribution, what was previously thought to be a maximum of emission along the molecular axis is found to be maxima at 35 degrees off axis, with a spectral minimum on axis. Both of these features are supported by photoionization calculations that underline the relationship between high-harmonic spectroscopy and photoionization measurements. The calculations reveal that the on axis spectral minimum is a Cooper-like minimum that arises from the destructive interference of the p and f partial wave contributions to high-harmonic photorecombination. Features such as Cooper minima and shape resonances are ubiquitous in molecular photoionization or recombination.
@article{
title = {Revealing the Cooper minimum of N_2 by Molecular Frame High-Harmonic Spectroscopy},
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abstract = {Molecular frame high-harmonic spectra of aligned N2 molecules reveal a Cooper-like minimum. By deconvolving the laboratory frame alignment distribution, what was previously thought to be a maximum of emission along the molecular axis is found to be maxima at 35 degrees off axis, with a spectral minimum on axis. Both of these features are supported by photoionization calculations that underline the relationship between high-harmonic spectroscopy and photoionization measurements. The calculations reveal that the on axis spectral minimum is a Cooper-like minimum that arises from the destructive interference of the p and f partial wave contributions to high-harmonic photorecombination. Features such as Cooper minima and shape resonances are ubiquitous in molecular photoionization or recombination.},
bibtype = {article},
author = {Bertrand, J. B. and Wörner, H. J. and Hockett, P. and Villeneuve, D. M. and Corkum, P. B.},
doi = {10.1103/PhysRevLett.109.143001},
journal = {Physical Review Letters},
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