An electron Talbot interferometer
نویسندگان
چکیده
منابع مشابه
An electron Talbot interferometer
The Talbot effect [1], in which a wave imprinted with transverse periodicity reconstructs itself at regular intervals, is a diffraction phenomenon that occurs in many physical systems. Here we present the first observation of the Talbot effect for electron de Broglie waves behind a nanofabricated transmission grating. This was thought to be difficult because of Coulomb interactions between elec...
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The Talbot interferometer has been shown earlier to act as an optical tapped delay-line in the time domain. The interferometer is based on the self-imaging effect. It consists of two gratings separated by a multiple of the self-imaging distance. Here, we determine its temporal behaviour experimentally. First, the impulse response is measured directly in the time domain by means of femtosecond p...
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X-ray Talbot interferometry (XTI) is described as a novel phase-sensitive X-ray imaging method. XTI uses two transmission gratings, and therefore in principle it functions with cone-beam X-rays of a broad energy band width, allowing its instrumentation with a compact X-ray source. Because an amplitude transmission grating is needed, X-ray lithography and electrochemical gold plating were employ...
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STEFAN GERLICH1, LUCIA HACKERMÜLLER1*, KLAUS HORNBERGER2, ALEXANDER STIBOR1, HENDRIK ULBRICHT1, MICHAEL GRING1, FABIENNE GOLDFARB1‡, TIM SAVAS3, MARCEL MÜRI4, MARCEL MAYOR4,5 AND MARKUS ARNDT1 Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Wien, Austria Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 Münche...
متن کاملOptimal Design of Transmission Grating for X-ray Talbot Interferometer
How to maximize the efficiency of X-ray Talbot interferometry (XTI) is discussed for X-ray phase imaging. Shape parameters of an amplitude grating used in XTI strongly affect the efficiency. We calculated efficiencies assuming rectangular and trapezoidal patterns for an absorption grating. As a result, a rectangular absorption grating of a duty ratio of 1:1 is optimal. But, a trapezoidal patter...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2009
ISSN: 1367-2630
DOI: 10.1088/1367-2630/11/3/033021