Publication
Title
Multipoint heterodyne vibrometry for measurements on unstable biomedical objects
Author
Abstract
In unstable objects, such as biological specimens, vibrational patterns can change quickly with time. To determine phase relationships between several vibrating points in such an object, it is therefore necessary to measure those points simultaneously. We describe a dual channel heterodyne interferometer capable to acquire vibrational data at two arbitrary spatial points simultaneouly over the entire acoustic frequency range. The design allows extension to four or even eight independent channels. Channel cross-talk is measured to be about -30 dB, below the S/N ratio within the signal channel. Velocity resolution is estimated to be 10 mu m/s, corresponding to an amplitude resolution of 1.5 nm at 1 kHz.
Language
English
Source (journal)
Proceedings of the Society of Photo-optical Instrumentation Engineers / SPIE: International Society for Optical Engineering. - Bellingham, Wash.
Source (book)
8th International Symposium on Laser Metrology, FEB 14-18, 2005, Merida, MEXICO
Publication
Bellingham, Wash. : SPIE - The International Society for Optical Engineering, 2005
ISBN
0-8194-5757-4
Volume/pages
5776(2005), p. 314-324
ISI
000228899900039
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 22.07.2021
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