Research and development of a laser beam scanner for a fractional therapy laser

Abstract

This paper presents the results of research and fabrication of a laser beam scanner used in a fractional therapy laser system based on factional technology to segment the laser beam for treatment. The beam scanning process is performed by controlling the rotation angle of two galvo motors along the X and Y axes. Scanning modes with different treatment areas including square-rectangle, circle-ellipse, isosceles triangle, isosceles trapezoid, and rhombus, have been developed, surveyed, and evaluated to establish a set of optimal control parameters for the treatment areas. The successful manufacture of the laser beam scanner allows to actively develop specific control software with changing parameters according to different treatment requirements, thereby making the treatment process more flexible and more effective.