IR Laser Radiation Induced Changes in the Infrared Absorption Spectra of Thin Polymer Films

摘要

The presented work demonstrates that powerful laser radiation causes changes in absorbance spectra of epoxy resin and polyethylene. Thin polymer films were located between infrared AgBrCl optical fibers and exposed to the radiation of CO_2 laser. The output of the laser source has been source has been varied in the range 0-8.5 Wt. Abosrbance spectra were measured by FTIR spectrophotometer. It was revealed that characteristic absorbance peaks of polymers decay under the powerful IR light. The apparent dependence of peak magnitude on IR radiation power has bene established.