DocumentCode :
2966784
Title :
High frequency ultrasound detection using Fabry-Perot optical etalon
Author :
Ashkenazi, S. ; Buma, T. ; O´Donnell, M.
Author_Institution :
Dept. of Biomed. Eng., Michigan Univ., Ann Arbor, MI, USA
Volume :
1
fYear :
2004
fDate :
23-27 Aug. 2004
Firstpage :
68
Abstract :
Optical detection of ultrasound is a promising technique for high resolution imaging arrays. The detection resolution approaches the optical resolution, which is on the order of the optical wavelength. We describe an optical technique for ultrasound detection based on a thin Fabry-Perot etalon. The method is optimized for high resolution detection using a very thin etalon (10 μm). The detection SNR outperforms that of a piezoelectric transducer over a 100 MHz bandwidth. Array functionality was demonstrated by scanning a probe beam along a line. A photoacoustic technique was applied to generate acoustic waves in a test phantom containing a single "point-like" source. An image of the source was reconstructed using signals acquired from the etalon detector array.
Keywords :
Fabry-Perot interferometers; acoustic signal detection; biomedical ultrasonics; medical image processing; optical sensors; optimisation; 10 micron; 100 MHz; Fabry-Perot optical etalon; SNR; biological applications; high frequency ultrasound detection; high resolution detection; high resolution imaging arrays; medical applications; optical detection; Acoustic signal detection; Bandwidth; Fabry-Perot; Frequency; High-resolution imaging; Optical arrays; Optical detectors; Optimization methods; Piezoelectric transducers; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 2004 IEEE
ISSN :
1051-0117
Print_ISBN :
0-7803-8412-1
Type :
conf
DOI :
10.1109/ULTSYM.2004.1417670
Filename :
1417670
Link To Document :
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