1977/08/01 by Oded Arnon
Engineering · Materials Science · #Surface Roughness and Optical Measurements #Optical Coatings and Gratings #Semiconductor Lasers and Optical Devices
paper · doi:10.1364/ao.16.002147
Residual absorption and scattering are loss mechanisms that degrade the performance of all thin films optical devices. By analogy to residual absorption, expressions are derived to evaluate losses due to surface and bulk scattering in dielectric multilayers. Based on these, proposals are made to improve the traditional performances of some basic filters. It is shown how, by means of index inhomogeneity, surface scattering is expected to be reduced considerably.