All-optical control and visualization of ultrafast two-dimensional atomic motions in a single crystal of bismuth

H. Katsuki, J.C. Delagnes, K. Hosaka, K. Ishioka, H. Chiba, E.S. Zijlstra, M.E. Garcia, H. Takahashi, K. Watanabe, M. Kitajima, Y. Matsumoto, K.G. Nakamura and K. Ohmori ()
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H. Katsuki: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan
J.C. Delagnes: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan
K. Hosaka: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan
K. Ishioka: Advanced Nano-Characterization Center, National Institute for Materials Science
H. Chiba: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan
E.S. Zijlstra: Theoretical Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel
M.E. Garcia: Theoretical Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel
H. Takahashi: CREST, Japan Science and Technology Agency
K. Watanabe: Kyoto University
M. Kitajima: National Defense Academy of Japan
Y. Matsumoto: Kyoto University
K.G. Nakamura: CREST, Japan Science and Technology Agency
K. Ohmori: Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki 444-8585, Japan

Nature Communications, 2013, vol. 4, issue 1, 1-7

Abstract: Abstract In a bulk solid, optical control of atomic motion provides a better understanding of its physical properties and functionalities. Such studies would benefit from active control and visualization of atomic motions in arbitrary directions, yet, so far, mostly only one-dimensional control has been shown. Here we demonstrate a novel method to optically control and visualize two-dimensional atomic motions in a bulk solid. We use a femtosecond laser pulse to coherently superpose two orthogonal atomic motions in crystalline bismuth. The relative amplitudes of those two motions are manipulated by modulating the intensity profile of the laser pulse, and these controlled motions are quantitatively visualized by density functional theory calculations. Our control-visualization scheme is based on the simple, robust and universal concept that in any physical system, two-dimensional particle motion is decomposed into two orthogonal one-dimensional motions, and thus it is applicable to a variety of condensed matter systems.

Date: 2013
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DOI: 10.1038/ncomms3801

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