Chaos in the pressure generated by laser absorption by microparticles

Bernard S. Gerstman; Eshel Faraggi; Jinming Sun

doi:10.1117/12.644846

28 February 2006 Chaos in the pressure generated by laser absorption by microparticles

Bernard S. Gerstman, Eshel Faraggi, Jinming Sun

Proceedings Volume 6084, Optical Interactions with Tissue and Cells XVII; 608406 (2006) https://doi.org/10.1117/12.644846
Event: SPIE BiOS, 2006, San Jose, California, United States

Abstract

We present initial results showing chaotic behavior in the pressure signals generated by laser absorption by a microparticle. Specifically, the system of a melanosome immersed in water is investigated. We describe how the system manifests chaos, and the implications for causing damage to the surrounding material. We also find that a characteristic acoustic time of the absorber, the time it takes a sound wave to traverse the absorber, known as the stress confinement time, defines an important time scale for laser pulse duration. For pulse durations shorter than the stress confinement time, the pressure response is periodic, while for pulse durations greater than the stress confinement time, chaotic pressure transients are observed.

Citation Download Citation

Bernard S. Gerstman, Eshel Faraggi, and Jinming Sun "Chaos in the pressure generated by laser absorption by microparticles", Proc. SPIE 6084, Optical Interactions with Tissue and Cells XVII, 608406 (28 February 2006); https://doi.org/10.1117/12.644846

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