Tissue ablation using two different IR-emitting lasers has been compared. The TEA CO//2 laser emits 1 J of 10. 6- mu m radiation in 2 mu s. The Er:YAG laser, which emits at 2. 94 mu m, was used in both a P-switched and normal spiking mode. The Q-switched laser delivers up to 100 mJ in a 150-ns long pulse (FWHM); operating normal mode, the laser emits up to 600 mJ in a 250- mu s-long envelope containing about twenty 1- mu s-long pulses. The emission of both lasers is strongly absorbed by water and thus tissue. Results for both lasers are described. It is found that a Q-switched Er:YAG laser can easily ablate tissue, creating incisions with as little as 5 mu m of residual thermal damage. Such incisions heal rapidly.
|Original language||English (US)|
|Title of host publication||Unknown Host Publication Title|
|Place of Publication||Washington, DC, USA|
|Publisher||Optical Soc of America|
|Number of pages||1|
|State||Published - 1987|
ASJC Scopus subject areas