Development of a novel light source with sub 100-ps temporal resolution for the investigation of laser-induced cavitation

Sebastian Freidank; Lei Fu; Xiao-Xuan Liang; Alfred Vogel; Norbert Linz

doi:10.1117/12.3000880

13 March 2024 Development of a novel light source with sub 100-ps temporal resolution for the investigation of laser-induced cavitation

Sebastian Freidank, Lei Fu, Xiao-Xuan Liang, Alfred Vogel, Norbert Linz

Author Affiliations +

Proceedings Volume PC12840, Optical Interactions with Tissue and Cells XXXV; PC1284003 (2024) https://doi.org/10.1117/12.3000880
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Laser-induced cavitation accompanies laser surgery in cells and transparent tissues and its engineering can improve surgical results. To elucidate the underlying mechanisms, plasma-mediated shock wave formation and bubble dynamics are investigated by stroboscopic and high-speed photography with ultrahigh spatiotemporal resolution. We developed a novel light source for speckle-free illumination at exposure times < 100 ps that is based on amplified spontaneous emission (ASE) and lasing in a femtosecond-laser-pumped Rhodamine dye cell. The contributions from ASE and lasing and their influence on pulse duration, divergence and coherence are investigated, and the emission characteristics are optimized for high repetition rates.

Conference Presentation

Citation Download Citation

Sebastian Freidank, Lei Fu, Xiao-Xuan Liang, Alfred Vogel, and Norbert Linz "Development of a novel light source with sub 100-ps temporal resolution for the investigation of laser-induced cavitation", Proc. SPIE PC12840, Optical Interactions with Tissue and Cells XXXV, PC1284003 (13 March 2024); https://doi.org/10.1117/12.3000880

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