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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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Quantum reflection of helium atom beams from a microstructured grating

Cited 12 times inthomson ciCited 9 times inthomson ci
Title
Quantum reflection of helium atom beams from a microstructured grating
Author
Zhao, Bum SukSchulz, Stephan A.Meek, Samuel A.Meijer, GerardSchoellkopf, Wieland
Issue Date
2008-07
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW A, v.78, no.1
Abstract
We observe high-resolution diffraction patterns of a thermal-energy helium atom beam reflected from a microstructured surface grating at grazing incidence. The grating consists of 10-μm -wide Cr strips patterned on a quartz substrate and has a periodicity of 20 μm. Fully resolved diffraction peaks up to the seventh order are observed at grazing angles up to 20 mrad. With changes in de Broglie wavelength or grazing angle the relative diffraction intensities show significant variations which shed light on the nature of the atom-surface interaction potential. The observations are explained in terms of quantum reflection at the long-range attractive Casimir-van der Waals potential.
URI
https://scholarworks.unist.ac.kr/handle/201301/9692
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=48349083803
DOI
10.1103/PhysRevA.78.010902
ISSN
2469-9926
Appears in Collections:
CHM_Journal Papers
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