Reduction of acoustic transients generated in liquid media and in tissue by pulsed 2-um lasers

Tomas Sedlacek; Michael A. Martinelli; Leon Esterowitz; Joseph F. Pinto

doi:10.1117/12.137472

7 August 1992 Reduction of acoustic transients generated in liquid media and in tissue by pulsed 2-um lasers

Tomas Sedlacek, Michael A. Martinelli, Leon Esterowitz, Joseph F. Pinto

Proceedings Volume 1646, Laser-Tissue Interaction III; (1992) https://doi.org/10.1117/12.137472
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

We are testing the acoustic response of Ho:Tm:YAG and Tm:YAG laser pulses absorption in water and in tissue using a broadband ultrasound PVDF transducer. A clear acoustic signature of the cavity formation as well as its collapse is obtained. The cavity collapse echo carries higher amplitudes and can be eliminated or reduced in tissue by direct fiber-tissue contact. The laser pulse temporal profile--smooth or spiky--has a rather small acoustic impact. Smoother pulses generate somewhat lower acoustic amplitudes during the cavity formation phase.

Citation Download Citation

Tomas Sedlacek, Michael A. Martinelli, Leon Esterowitz, and Joseph F. Pinto "Reduction of acoustic transients generated in liquid media and in tissue by pulsed 2-um lasers", Proc. SPIE 1646, Laser-Tissue Interaction III, (7 August 1992); https://doi.org/10.1117/12.137472

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