DocumentCode
1228877
Title
Terahertz Interferometer That Senses Vibrations Behind Barriers
Author
Chen, Jerry C. ; Kaushik, Sumanth
Author_Institution
Lincoln Lab., MIT, Lexington, MA
Volume
19
Issue
7
fYear
2007
fDate
4/1/2007 12:00:00 AM
Firstpage
486
Lastpage
488
Abstract
A terahertz sensor that measures vibrations behind optically opaque barriers (cardboard, plastic, wool, cotton) is described and demonstrated. Using interferometric techniques, submicrometer displacements can be resolved. Measured spectral response agrees with commercial vibrometer
Keywords
infrared detectors; infrared imaging; light interferometers; submillimetre wave detectors; vibration measurement; infrared imaging; infrared measurements; interferometric techniques; optical opaque barriers; spectral response; submicrometer displacements; terahertz interferometer; vibration measurement; vibration sensing; Frequency; Infrared sensors; Optical interferometry; Optical sensors; Plastics; Quantum cascade lasers; Sensor phenomena and characterization; Submillimeter wave measurements; Velocity measurement; Vibration measurement; Infrared imaging; infrared measurements; optical interferometry; optical velocity measurement; vibration measurement;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2007.893583
Filename
4126561
Link To Document