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26 April 2018 Investigation of optical and hydrodynamic processes initiated in biological tissues and liquids under the action of high-power pulses of 1.54 μm laser radiation
Andrey V. Belikov, Yana Yu. Fomicheva, Sergey V. Gagarskiy, Andrey N. Sergeev, Sergey N. Smirnov, Alexey M. Zagorulko
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Proceedings Volume 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX; 107160W (2018) https://doi.org/10.1117/12.2307238
Event: Saratov Fall Meeting 2017, 2017, Saratov, Russian Federation
Abstract
The results of strobe-photographic study of steam-gas cavities formation in a bulk of saline as a result of high-power Yb,Er:Glass laser pulses impact are presented. The data on dynamics of laser pulse transmission through the laserproduced steam-gas cavity for different values of the distance h between the fiber end and the cuvette bottom (quartz plate) are presented. It was observed that the steam-gas cavity might be used for effective non-contact delivery of laser radiation to the submerged target: transmission value at maximum steam-gas cavity size reached 0.87 for h = 0.5 mm. The influence of steam-gas cavities parameters on ablation efficiency of eye lens destruction in vitro is also discussed. The ablation of cataract eye lens in liquid environment is more effective than in air. The efficiency of eye lens ablation decreases with the increase of h . The maximal values of ablation efficiency (2.14·10-3 mm3/pulse) were obtained in the case of underwater ablation at h = 0 mm.
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Andrey V. Belikov, Yana Yu. Fomicheva, Sergey V. Gagarskiy, Andrey N. Sergeev, Sergey N. Smirnov, and Alexey M. Zagorulko "Investigation of optical and hydrodynamic processes initiated in biological tissues and liquids under the action of high-power pulses of 1.54 μm laser radiation", Proc. SPIE 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX, 107160W (26 April 2018); https://doi.org/10.1117/12.2307238
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KEYWORDS
Liquids
Laser ablation
Eye
Pulsed laser operation
Tissues
High power lasers
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