Laser Physics

, Volume 21, Issue 7, pp 1230–1234 | Cite as

Laser-induced hydrodynamics in water-saturated biotissues: 2. Effect on delivery fiber

  • V. I. Yusupov
  • V. M. Chudnovskii
  • V. N. Bagratashvili
Laser Methods in Chemistry, Biology, and Medicine

Abstract

The degradation of the end surface of the delivery fiber due to the laser-induced hydrodynamic processes caused by the irradiation of the water-saturated tissue by CW laser with a wavelength of 970 nm and moderate power (1–10 W) is analyzed. It is demonstrated that the temperature in the vicinity of the end surface can be up to several thousand degrees at a laser intensity of about 104 W/cm2. Relatively high temperatures and pressures that are reached upon the collapse of the cavitation microbubbles lead to the formation of the nanosized diamond-phase particles and supercritical water, which also facilitates the degradation of fiber.

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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • V. I. Yusupov
    • 1
    • 2
  • V. M. Chudnovskii
    • 1
  • V. N. Bagratashvili
    • 2
  1. 1.Il’ichev Pacific Oceanological Institute, Far Eastern BranchRussian Academy of SciencesVladivostokRussia
  2. 2.Institute on Laser and Information TechnologiesRussian Academy of SciencesMoscow oblastRussia

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