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16 June 2011 Operating point stabilization of fiber-based line detectors for photoacoustic imaging
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Abstract
Photoacoustic imaging is an upcoming technique in the field of biomedical imaging. Our group introduced fiber-based line detectors, which are used to acquire broad-band ultrasonic signals, several years ago. Up to now operating point stabilization of fiber-based line detectors was realized by tuning the wavelength of the detection laser. This is, because of the high costs, not applicable for parallel detection. An alternative stabilization method, the change of the optical path length, is presented in this paper. Changing of the optical path length is realized by stretching the fiber with piezoelectric tubes. Fringe patterns and operation point stabilization of both stabilization schemes are compared. Next, signal detection utilizing a polymer optical fiber in a Mach-Zehnder and Fabry-Perot interferometer is demonstrated, and the influence of the detection wavelength (633nm and 1550nm) is examined. Finally, two-dimensional imaging by utilizing a perfluorinated polymer fiber is demonstrated.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Karoline Felbermayer, Hubert Grün, Thomas Berer, and Peter Burgholzer "Operating point stabilization of fiber-based line detectors for photoacoustic imaging", Proc. SPIE 8090, Novel Biophotonic Techniques and Applications, 809011 (16 June 2011); https://doi.org/10.1117/12.889097
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