Title :
Production and detection theory of pulsed photoacoustic wave with maximum amplitude and minimum distortion in absorbing liquid
Author :
Zhao, Zuomin ; Nissilä, Seppo ; Ahola, Onni ; Myllylä, Risto
Author_Institution :
Dept. of Electr. Eng., Oulu Univ., Finland
fDate :
4/1/1998 12:00:00 AM
Abstract :
The photoacoustic effect produced by laser-induced stress waves in liquids has found a variety of scientific and practical applications in industry, medicine, and environmental protection. The photoacoustic technique has the natural advantage of being less sensitive to scattering than traditional optical tools, thus offering increased accuracy and sensitivity. This paper aims to give a systematic outline of photoacoustic techniques, starting with the production and extending to the propagation and detection of photoacoustic waves. The focal point is the production of acoustic waves with maximum amplitude and minimum distortion. Maximum amplitude plays an essential role in photoacoustic spectroscopy and minimum distortion is the key to the determination of optical distribution and imaging in turbid media
Keywords :
acoustic pulses; acoustic signal detection; acoustic wave production; photoacoustic effect; photoacoustic spectroscopy; absorbing liquid; cylindrical source; imaging in turbid media; laser-induced stress waves; maximum amplitude; minimum distortion; optical distribution; photoacoustic effect; photoacoustic spectroscopy; photoacoustic wave detection; photoacoustic wave production; plane source; pulse formation; pulsed photoacoustic wave; receiver-induced modifications; spherical source; wave shape; Acoustic distortion; Biomedical optical imaging; Laser theory; Optical distortion; Optical pulses; Optical scattering; Optical sensors; Photoacoustic effects; Production; Stress;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on