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Zhao, Bum Suk
Atom and Molecule Optics Lab (AMOL)
Research Interests
  • Standing wave, quantum state, optical force, grazing inceidence, atom optics, matter wave

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Experimental test of Babinet’s Principle in matter-wave diffraction

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Title
Experimental test of Babinet’s Principle in matter-wave diffraction
Author
Kim, Lee YeongLee, Ju HyeonKim, Yun-TaePark, SanghwanLee, Chang YoungSchollkopf, WielandZhao, Bum Suk
Issue Date
2021-04
Publisher
Royal Society of Chemistry
Citation
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.23, no.13, pp.8030 - 8036
Abstract
We report on an experimental test of Babinet's principle in quantum reflection of an atom beam from diffraction gratings. The He beam is reflected and diffracted from a square-wave grating at near grazing-incidence conditions. According to Babinet's principle the diffraction peak intensities (except for the specular-reflected beam) are expected to be identical for any pair of gratings of complementary geometry. We observe conditions where Babinet's principle holds and also where it fails. Our data indicate breakdown conditions when either the incident or a diffracted beam propagates close to the grating surface. At these conditions, the incident or the diffracted He beam is strongly affected by the dispersive interaction between the atoms and the grating surface. Babinet's principle is also found to break down, when the complementary grating pair shows a large asymmetry in the strip widths. For very small strip widths, edge diffraction from half planes becomes dominant, whereas for the complementary wide strips the atom–surface interactions leads to a strong reduction of all non-specular diffraction peak intensities.
URI
https://scholarworks.unist.ac.kr/handle/201301/49934
URL
https://pubs.rsc.org/en/content/articlelanding/2021/cp/d0cp05694d#!divAbstract
DOI
10.1039/d0cp05694d
ISSN
1463-9076
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CHM_Journal Papers
ECHE_Journal Papers
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