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Sensitivity enhancement of an open-cavity-based optoacoustic sensor

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Abstract

We present a new method for sensitive ultrasound detection using an open-cavity optoacoustic sensor. Our results have demonstrated significant enhancement of detection sensitivity when the open-cavity sensor is used in media with large isothermal compressibility. A near-linear relationship between detected optoacoustic signal strength and isothermal compressibility has been found.

© 2013 Optical Society of America

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