DocumentCode
393262
Title
Measurements of air-borne ultrasound by detecting the modulation in optical refractive index of air
Author
Nakamura, Kentaro ; Hirayama, Manabu ; Ueha, Sadayuki
Author_Institution
P&I Lab, Tokyo Inst. of Technol., Yokohama, Japan
Volume
1
fYear
2002
fDate
8-11 Oct. 2002
Firstpage
609
Abstract
Sound pressure was measured by a laser Doppler velocimeter (LDV) through the acousto-optic effect of air. First, the author studied the acousto-optic coefficient of air and gave the quantitative relationship between the sound pressure and the LDV output. Then, two-dimensional measurements were demonstrated for a standing wave and a radiated field.
Keywords
Doppler measurement; air; laser velocimetry; refractive index measurement; ultrasonic measurement; acousto-optic coefficient; acousto-optic effect; air-borne ultrasound measurements; laser Doppler velocimeter; optical refractive index modulation; radiated field; standing wave; Optical modulation; Optical refraction; Optical sensors; Optical variables control; Pressure measurement; Refractive index; Ring lasers; Ultrasonic imaging; Ultrasonic variables measurement; Wavelength measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
ISSN
1051-0117
Print_ISBN
0-7803-7582-3
Type
conf
DOI
10.1109/ULTSYM.2002.1193476
Filename
1193476
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