A Brief Review of 2 μm Laser Scalpel

The 2 μm laser gains advantages in aspects of simple optical system, accessible fiber path, compact structure, and accurate positioning over far-infrared CO
₂
laser, as well as high absorption efficient for water and high safety to human eyes over visible and near-infrared lasers. The laser scalpel based on 2 μm laser thus has been widely investigated because of its safe, effective, accurate, and versatile application. In this paper, the development of 2 μm laser scalpel is briefly reviewed, in which the research progress of the interactions of 2 μm laser on biological tissues is particularly involved.