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Phys. Rev. Lett. 82, 1696–1699 (1999)

Coherent Propagation of X Rays in a Planar Waveguide with a Tunable Air Gap

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M. J. Zwanenburg1, J. F. Peters1, J. H. H. Bongaerts1, S. A. de Vries2, D. L. Abernathy3, and J. F. van der Veen1
1Van der Waals-Zeeman Institute, University of Amsterdam, Valckenierstraat 65, 1018 XE, Amsterdam, The Netherlands
2FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ, Amsterdam, The Netherlands
3European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble Cedex, France

Received 20 October 1998; published in the issue dated 22 February 1999

We have made a multimode waveguide of x rays having an air gap as the guiding medium. Individual transverse electric modes were found to propagate through the planar waveguide with essentially no attenuation and with negligible scattering losses to other modes. If different modes are excited simultaneously at the waveguide entrance, then the phase relation between these modes as given by their propagation constants is found to be preserved over the entire length of the waveguide.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.1696
DOI:
10.1103/PhysRevLett.82.1696
PACS:
61.10.-i, 07.85.Qe, 41.50.+h
 
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