Laser-induced hydrodynamics in water-saturated biotissues: 2. Effect on delivery fiber
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- Yusupov, V.I., Chudnovskii, V.M. & Bagratashvili, V.N. Laser Phys. (2011) 21: 1230. doi:10.1134/S1054660X11140015
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.