Behavior of the reflection coefficients of textolites under laser heating

The reflection coefficients at the wavelengths 0.63, 1.15, and 10.6 μm of composite materials, heated in air by continuous CO2 laser radiation, were determined experimentally. We studied the behavior of the reflection coefficients of organic fiber plastics of the Getinaks and textolite PTK types as well as STK glass textolite as a function of the density of the continuous CO2 laser radiation flux incident on them. The textolites studied are polymer composite materials. The measurements were performed on a setup which permits recording simultaneously the He-Ne and CO2 laser radiation fluxes reflected from the samples and the temperature of the surface of the target in the heating zone