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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7657–7668

Nanofocusing optics for synchrotron radiation made from polycrystalline diamond

O. J. L. Fox, L. Alianelli, A. M. Malik, I. Pape, P. W. May, and K. J. S. Sawhney  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 7657-7668 (2014)

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Diamond possesses many extreme properties that make it an ideal material for fabricating nanofocusing x-ray optics. Refractive lenses made from diamond are able to focus x-ray radiation with high efficiency but without compromising the brilliance of the beam. Electron-beam lithography and deep reactive-ion etching of silicon substrates have been used in a transfer-molding technique to fabricate diamond optics with vertical and smooth sidewalls. Latest generation compound refractive lenses have seen an improvement in the quality and uniformity of the optical structures, resulting in an increase in their focusing ability. Synchrotron beamline tests of two recent lens arrays, corresponding to two different diamond morphologies, are described. Focal line-widths down to 210 nm, using a nanocrystalline diamond lens array and a beam energy of E = 11 keV, and 230 nm, using a microcrystalline diamond lens at E = 15 keV, have been measured using the Diamond Light Source Ltd. B16 beamline. This focusing prowess is combined with relatively high transmission through the lenses compared with silicon refractive designs and other diffractive optics.

© 2014 Optical Society of America

OCIS Codes
(220.3630) Optical design and fabrication : Lenses
(340.0340) X-ray optics : X-ray optics

ToC Category:
X-ray Optics

Original Manuscript: October 29, 2013
Revised Manuscript: January 8, 2014
Manuscript Accepted: January 12, 2014
Published: March 26, 2014

O. J. L. Fox, L. Alianelli, A. M. Malik, I. Pape, P. W. May, and K. J. S. Sawhney, "Nanofocusing optics for synchrotron radiation made from polycrystalline diamond," Opt. Express 22, 7657-7668 (2014)

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