27 March 1997 Energy balance between vaporization and heating in the absorption of CO2 laser radiation by water
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Abstract
The use of lasers in industrial and medical procedures continues to increase. A fundamental question in many laser- material interactions is how is the incident laser power transferred to the target material, and how is the power distributed among the phases (solid, liquid, vapor) of the material. This paper describes the results of a fundamental calorimetry experiment to determine the fraction of incident carbon-dioxide laser energy which is used to vaporize water from a target volume, and the fraction of power used to simply heat the remaining liquid. The experiment was performed over a range of incident laser powers from 60 to 300 W. Over most of the range of incident power, the fraction used to vaporize water is 30 to 35 percent. This fraction increases at the lowest powers.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert E. Mueller, Robert E. Mueller, Henry Yam, Henry Yam, Walter W. Duley, Walter W. Duley, } "Energy balance between vaporization and heating in the absorption of CO2 laser radiation by water", Proc. SPIE 2993, Lasers as Tools for Manufacturing II, (27 March 1997); doi: 10.1117/12.270032; https://doi.org/10.1117/12.270032
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