Abstract
The effect of a Er: YAG laser on living tissues was studies through the observation of tissue evaporations using Wister rat skins.
Pulse irradiation number and repetition frequency dependences of the evaporation cross section of the tissues were observed.
Very thin coagulation layer similar to that of excimer laser was observed.
Spot size of 3mm φ was used considering or clinical applications.
A bleeding was not observed during the experiments. The evaporation crass sections were found to be proportional to the total irradiation laser energies, but independent to the repetition frequencies of the laser pulses.
