Abstract
Continuous wave (CW) CO 2 lasers have been in common medicine use for over 40 years. Tissue dissection using CW lasers is accompanied by high heating of adjacent tissue. This effect is highly useful during the soft tissue surgery due to its ability to prevent bleeding. However, there exist problems that require tissue removal without adjacent layers heating. For example: scar removal from skin surface, microbial films removal from surfaces of ENT organs in otolaryngology, ablation of biological tissues for mass spectrometric analysis and so on. In these cases pulsed laser radiation is needed because pulse duration narrowing dramatically decreases the heat transfer out of the irradiated region during ablation of tissue.
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