Thermal variations of refractive and dispersive parameters of optical polymers

Abstract

Abstract Temperature dependence of refractive and dispersive parameters of principal and some trade-marks of optical polymers has been studied. Refractive indices have been measured at several spectral lines in visible range at different temperatures between 0 and 50 °C. Thermo-optic coefficients have been determined and compared. We used the single-oscillator model of Wemple and DiDomenico to calculate oscillator energy and dispersion energy. These two quantities are related to the structure, charge distribution and chemical bonding of the material. Correlation to the dispersion properties of polymers is established. Variations of the two oscillator parameters with temperature are studied.