Abstract
Laser-tissue interactions have been investigated through UV-Visible optical absorption, Fourier Transform Infrared Spectroscopy (FTIR) and Electron Micro Probe Analysis (EPMA). Gelatin thin films and cow thighbone were irradiated by KrF excimer and CO2 lasers and 3 excimer lasers (ArF, KrF and XeCl), respectively.In the case of gelatin, a broad absorption band was observed at around 280 nm by KrF excimer laser irradiation, although no absorption band was observed by CO2laser irradiation. From the result of FTIR measurements, it was clear that this band arised from cutting of C-N and C=0 bonds in polypeptide chain.The result of EPMA showed that P atoms were more spattered than Ca atoms from the surface of cow thighbone by only ArF laser irradiation.
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