Frequency-selected Q-switched e-beam-controlled discharge CO laser and its a

摘要

Abstract: Frequency selected Q-switched e-beam controlled-discharge CO-laser has been researched and developed for surface heat treatment of polymeric materials (poly(ethyleneterephthalate) and nylon) having strong absorption bands near wavelength of approximately 6 $mu@m. The laser generates pulses (including short ones with duration $tau$-0.1$/ approximately 1 - 10 $mu@s) having different spectral content within 4.9 - 6.5 $mu@m spectral range. Different geometry and methods of irradiation were used to process samples with the laser radiation of different temporal, spectral and energy density characteristics. Different types of microstructure were formed on the surfaces of the sample. Experimental conditions corresponding to each type of microstructure were defined. Visual (macro) changes of polymeric material properties (if any) and their correlation with formed microstructures were analyzed.!9