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

John F. Federici, Robert L. Wample, David Rodriguez, Suman Mukherjee

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1382-1388
Number of pages7
JournalApplied Optics
Volume48
Issue number7
DOIs
StatePublished - Mar 1 2009

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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