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1 July 2004 Ab-initio calculations for shock wave and bubble production with Gaussian temporal laser pulses
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Abstract
Theoretical work has been previously reported in which the full thermo-mechanical response of an absorber to an incident laser pulse has been calculated. For a laser pulse of any energy or duration, the temperature rise, explosive bubble formation, and shock wave generation in the surrounding medium can be predicted. This work allows the assessment of danger to biological or opto-electronic systems from laser pulses. The work also allows the thermo-mechanical properties of micro and nano particle absorbers, such as the thermal expansion coefficient and bulk modulus, to be calculated from measurements of the pressure waves generated in the medium. Previous results assumed a temporal profile for the laser pulse that was a square wave with infinitely fast rise and fall times. We report on new calculations that use a more realistic gaussian-like temporal profile for the laser pulse. We compare how the resulting thermo-mechanical responses are altered compared to the idealized temporal square wave laser pulse.
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Bernard S. Gerstman, Shijun Wang, and Eshel Faraggi "Ab-initio calculations for shock wave and bubble production with Gaussian temporal laser pulses", Proc. SPIE 5319, Laser Interaction with Tissue and Cells XV, (1 July 2004); https://doi.org/10.1117/12.527878
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