Effects of cavitation bubble interaction with temporally separated fs-laser pulses

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Tinne, N.; Knoop, G.; Kallweit, N.; Veith, S.; Bleeker, S. et al.: Effects of cavitation bubble interaction with temporally separated fs-laser pulses. In: Journal of Biomedical Optics 19 (2014), Nr. 4, 48001. DOI: https://doi.org/10.1117/1.JBO.19.4.048001

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Sum total of downloads: 252




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Abstract: 
We present a time-resolved photographic analysis of the pulse-to-pulse interaction. In particular, we studied the influence of the cavitation bubble induced by a fs-pulse on the optical focusing of the consecutive pulse and its cavitation bubble dynamics in dependence on temporal pulse separation in water. As a first result, by decreasing the temporal separation of laser pulses, there is a diminishment of the laser-induced optical breakdown (LIOB) efficiency in terms of energy conversion, caused by disturbed focusing into persisting gas bubbles at the focal volume. A LIOB at the focal spot is finally suppressed by impinging the expanding or collapsing cavitation bubble of the preceding pulse. These results could be additionally confirmed in porcine gelatin solution with various concentrations. Hence, the interaction between the laser and transparent ophthalmic tissue may be accompanied by a raised central laser energy transmission, which could be observed in case of a temporal pulse overlap. In conclusion, our experimental results are of particular importance for the optimization of the prospective ophthalmic surgical process with future generation fs-lasers.
License of this version: CC BY 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2014
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 162 64.29%
2 image of flag of United States United States 42 16.67%
3 image of flag of China China 8 3.17%
4 image of flag of No geo information available No geo information available 3 1.19%
5 image of flag of Taiwan Taiwan 3 1.19%
6 image of flag of Romania Romania 3 1.19%
7 image of flag of Philippines Philippines 3 1.19%
8 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 3 1.19%
9 image of flag of Russian Federation Russian Federation 2 0.79%
10 image of flag of Brazil Brazil 2 0.79%
    other countries 21 8.33%

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