Abstract
When performing ultraviolet (UV) laser surgery, certain problems, such as genetic damage, must be considered because photochemical damage to living tissue is caused without exception during UV laser irradiation. In the present paper, changes in the structure of soft tissue caused by UV laser irradiation are discussed. A lipid was adopted as a soft tissue model. The UV and IR absorption spectra of the lipid were measured before and after each irradiation either an ArF or a KrF excimer laser. A remarkable difference in UV absorption spectra was found between KrF and ArF excimer laser irradiation. This difference was clearly identified using the resultant IR absorption spectra of the lipid.
