Effects of optical energy distribution on the generation of acoustic plane waves

André Conjusteau; Sergey A. Ermilov; Hans-Peter Brecht; Alexander A. Oraevsky

doi:10.1117/12.846992

23 February 2010 Effects of optical energy distribution on the generation of acoustic plane waves

André Conjusteau, Sergey A. Ermilov, Hans-Peter Brecht, Alexander A. Oraevsky

Proceedings Volume 7564, Photons Plus Ultrasound: Imaging and Sensing 2010; 75641L (2010) https://doi.org/10.1117/12.846992
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

We have investigated the limitations of our laser ultrasonic plane wave δ-source. In theory, the device is capable of producing an acoustic impulse with a bandwidth exceeding 30 MHz. However, a bandwidth of 12 MHz is measured with a calibrated wideband hydrophone. A test setup was designed and built. It permits the investigation of experimental parameters that alter the generated acoustic impulse: laser pulse duration, laser spatial profile, and absorber opacity. Laser energy spatial profile is the main contributor to the narrowing of the frequency band. Our findings are presented, along with further justifications for a device with very large effective area.

Citation Download Citation

André Conjusteau, Sergey A. Ermilov, Hans-Peter Brecht, and Alexander A. Oraevsky "Effects of optical energy distribution on the generation of acoustic plane waves", Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 75641L (23 February 2010); https://doi.org/10.1117/12.846992

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