Research Article Open Access

Control of Bubble Formation at the Optical Fiber Tip by Analyzing Ultrasound Acoustic Waves

Viacheslav Viacheslavovich Kazakov1, Vladimir Isaakovich Yusupov2, Viktor Nikolaevich Bagratashvili2, Anton Ivanovich Pavlikov1 and Vladislav Antonievich Kamensky1
  • 1 Institute of Applied Physics of the Russian Academy of Sciences, Russia
  • 2 Institute of Photon Technologies of Federal Scientific Research Centre, Russia
American Journal of Engineering and Applied Sciences
Volume 9 No. 4, 2016, 921-927

DOI: https://doi.org/10.3844/ajeassp.2016.921.927

Submitted On: 24 October 2016 Published On: 2 November 2016

How to Cite: Kazakov, V. V., Yusupov, V. I., Bagratashvili, V. N., Pavlikov, A. I. & Kamensky, V. A. (2016). Control of Bubble Formation at the Optical Fiber Tip by Analyzing Ultrasound Acoustic Waves. American Journal of Engineering and Applied Sciences, 9(4), 921-927. https://doi.org/10.3844/ajeassp.2016.921.927

Abstract

The problems of controlling the processes of generation of acoustic waves and microbubbles at the optical fiber tip of moderate-power surgical lasers with wavelengths of 1.9 µm and 0.97 µm using active and passive acoustic methods are considered. It is shown that microbubbles of various sizes can be detected with an ultrasound method, in which the interaction area is recorded simultaneously at two frequencies. By measuring noise with a receiving transducer of an ultrasonic locator, we determine the frequency range of the acoustic signals occurring when large diameter bubbles, including gas-vapor bubbles, collapse. Model experiments are conducted to detect noise and bubbles in water and in a water-saturated 1.5% agarose phantom at various laser powers with an optical fiber tip having a strongly absorbing coating.

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Keywords

  • Laser Heating
  • Dual-Frequency Ultrasound
  • Acoustic Noise
  • Bubble Detection
  • Optical Fiber with Strongly Absorbing Coating