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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 5 — May. 5, 2009

Application of terahertz Gouy phase shift from curved surfaces for estimation of crop yield

John F. Federici, Robert L. Wample, David Rodriguez, and Suman Mukherjee  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. 1382-1388 (2009)
http://dx.doi.org/10.1364/AO.48.001382


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Abstract

The application of terahertz time-domain spectroscopy (THz-TDS) and imaging to differentiate flat and curved surfaces in reflection via the THz Gouy phase shift is demonstrated. For a THz-TDS system that is aligned for reflection from a flat surface, the presence of a curved surface displaces the image focal plane from the detector plane, resulting in a Gouy phase shift. The potential of utilizing this configuration for estimating the number and size of curved objects is discussed with particular emphasis on agriculture crop yield estimates.

© 2009 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

History
Original Manuscript: October 27, 2008
Revised Manuscript: January 26, 2009
Manuscript Accepted: February 10, 2009
Published: February 25, 2009

Virtual Issues
Vol. 4, Iss. 5 Virtual Journal for Biomedical Optics

Citation
John F. Federici, Robert L. Wample, David Rodriguez, and Suman Mukherjee, "Application of terahertz Gouy phase shift from curved surfaces for estimation of crop yield," Appl. Opt. 48, 1382-1388 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-48-7-1382

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