Hard x-ray single crystal bi-mirror
Author(s) -
Mikhail Lyubomirskiy,
I. Snigireva,
S. Kuznetsov,
V. Yunkin,
A. Snigirev
Publication year - 2015
Publication title -
optics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.40.002205
Subject(s) - optics , interferometry , interference (communication) , interference microscopy , x ray optics , beamline , microfabrication , materials science , surface finish , physics , channel (broadcasting) , x ray , beam (structure) , medicine , alternative medicine , electrical engineering , pathology , fabrication , composite material , engineering
We report a novel hard x-ray interferometer consisting of two parallel channels manufactured in a single Si crystal by means of microfabrication technology. The sidewall surfaces of the channels, similar to mirrors, scatter at very small incident angles, acting equivalently to narrow micrometer size slits as in the Young double-slit interferometer. Experimental tests of the interferometer were performed at the ESRF ID06 beamline in the energy range from 12 to 16 keV. The interference patterns at different grazing incidence angles were recorded in the near- and far-field. Evaluation of the influence of the channel surface roughness on the visibility of interference fringes was performed. The proposed interferometer design allows the arrangement of mirrors at different split distances.
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