Acoustic phase imaging with terahertz radiation.
We report on acoustic phase imaging of objects using terahertz radiation. The sensitivity of the technique is sufficient to detect objects at oscillation amplitudes down to about 300 nm. Such acoustic amplitudes are comparable to the human physiological perception level, which offers novel opportunities in security imaging.
Buersgens
Federico
F
Photonics and Optoelectronics Group, University of Munich, Amalienstr. 54, 80799 Munich, Germany.
Acuna
Guillermo
G
Kersting
Roland
R