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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 6 — Mar. 15, 2012
  • pp: 1070–1072

Nonimaging speckle interferometry for high-speed nanometer-scale position detection

E. G. van Putten, A. Lagendijk, and A. P. Mosk  »View Author Affiliations


Optics Letters, Vol. 37, Issue 6, pp. 1070-1072 (2012)
http://dx.doi.org/10.1364/OL.37.001070


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Abstract

We experimentally demonstrate a nonimaging approach to displacement measurement for complex scattering materials. By spatially controlling the wavefront of the light that incidents on the material, we concentrate the scattered light in a focus on a designated position. This wavefront acts as a unique optical fingerprint that enables precise position detection of the illuminated material by simply measuring the intensity in the focus. By combining two fingerprints we demonstrate position detection along one in-plane dimension with a displacement resolution of 2.1 nm. As our approach does not require an image of the scattered field, it is possible to employ fast nonimaging detectors to enable high-speed position detection of scattering materials.

© 2012 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(290.0290) Scattering : Scattering

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 21, 2011
Revised Manuscript: February 8, 2012
Manuscript Accepted: February 11, 2012
Published: March 12, 2012

Citation
E. G. van Putten, A. Lagendijk, and A. P. Mosk, "Nonimaging speckle interferometry for high-speed nanometer-scale position detection," Opt. Lett. 37, 1070-1072 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-6-1070

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