Academic Journal
Interaction mechanisms of cavitation bubbles induced by spatially and temporally separated fs-laser pulses
| العنوان: | Interaction mechanisms of cavitation bubbles induced by spatially and temporally separated fs-laser pulses |
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| المؤلفون: | Tinne, Nadine, Kaune, Brigitte, Krüger, Alexander, Ripken, Tammo |
| المصدر: | PLoS ONE 9 (2014), Nr. 12 |
| بيانات النشر: | Public Library of Science (PLoS) |
| سنة النشر: | 2014 |
| المجموعة: | Institutional Repository of Leibniz Universität Hannover |
| مصطلحات موضوعية: | accuracy, Article, biomechanics, cavitation bubble, energy conversion, eye surgery, laser, ophthalmic femtosecond laser, oscillation, photodynamics, process optimization, reaction time, shock wave, animal, hydrodynamics, light related phenomena, pig, radiation response, spatiotemporal analysis, time factor, vitreous body, volatilization, gelatin, water, Animals, Lasers, Optical Processes, Spatio-Temporal Analysis, Swine, Time Factors |
| الوصف: | The emerging use of femtosecond lasers with high repetition rates in the MHz regime together with limited scan speed implies possible mutual optical and dynamical interaction effects of the individual cutting spots. In order to get more insight into the dynamics a time-resolved photographic analysis of the interaction of cavitation bubbles is presented. Particularly, we investigated the influence of fslaser pulses and their resulting bubble dynamics with various spatial as well as temporal separations. Different time courses of characteristic interaction effects between the cavitation bubbles were observed depending on pulse energy and spatio-temporal pulse separation. These ranged from merely no interaction to the phenomena of strong water jet formation. Afterwards, the mechanisms are discussed regarding their impact on the medical application of effective tissue cutting lateral to the laser beam direction with best possible axial precision: the mechanical forces of photodisruption as well as the occurring water jet should have low axial extend and a preferably lateral priority. Furthermore, the overall efficiency of energy conversion into controlled mechanical impact should be maximized compared to the transmitted pulse energy and unwanted long range mechanical side effects, e.g. shock waves, axial jet components. In conclusion, these experimental results are of great importance for the prospective optimization of the ophthalmic surgical process with high-repetition rate fs-lasers. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1932-6203 |
| Relation: | http://dx.doi.org/10.15488/4615; https://www.repo.uni-hannover.de/handle/123456789/4657 |
| DOI: | 10.15488/4615 |
| الاتاحة: | https://www.repo.uni-hannover.de/handle/123456789/4657 https://doi.org/10.15488/4615 |
| Rights: | CC BY 4.0 Unported ; https://creativecommons.org/licenses/by/4.0/ ; frei zugänglich |
| رقم الانضمام: | edsbas.65D25132 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 19326203 |
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| DOI: | 10.15488/4615 |