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Design and construction of axial slow flow continuous wave folded carbon dioxide laser

Kenar, Necmettin
Design and realization of a conventional carbon dioxide laser was performed. Gas composition and gas pressure effects on laser output power were studied. Effects of input electrical power and current on laser power were also investigated. Beam profiling of the laser beam was performed by pinhole method. Laser beam parameters like beam divergence, beam propagation factor were measured. These properties were extracted from focusing a laser beam in near field and performing a number of cuts across the beam cross-section and measuring the beam diameter at these points. Diameter measurements were obtained by knife edge method. Laser beam parameters were obtained for three different power laser beams in two axes across the beam. Found parameters were compared with regard to beam power and beam cross-section axis. Also possibility of using the obtained laser beam in material processing was investigated.