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 language | English (US) |
|---|---|
| Pages (from-to) | 1382-1388 |
| Number of pages | 7 |
| Journal | Applied Optics |
| Volume | 48 |
| Issue number | 7 |
| DOIs | |
| State | Published - Mar 1 2009 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering