CO2 and Er:YAG laser interaction with grass tissues
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- CO2 and Er:YAG laser interaction with grass tissues
- Kim, Jaehun; Ki, Hyungson
- Issue Date
- AMER INST PHYSICS
- JOURNAL OF APPLIED PHYSICS, v.113, no.4, pp.044902
- Plant leaves are multi-component optical materials consisting of water, pigments, and dry matter, among which water is the predominant constituent. In this article, we investigate laser interaction with grass using CO2 and Er:YAG lasers theoretically and experimentally, especially targeting water in grass tissues. We have first studied the optical properties of light absorbing constituents of grass theoretically, and then have identified interaction regimes and constructed interaction maps through a systematic experiment. Using the interaction maps, we have studied how interaction regimes change as process parameters are varied. This study reveals some interesting findings concerning carbonization and ablation mechanisms, the effect of laser beam diameter, and the ablation efficiency and quality of CO2 and Er: YAG lasers.
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