Waveguide losses by photothermal techniques in multilayers for laser damage investigation

Optical measurement of size and complex index of laser-damage precursors: the inverse problem

“…As the surface density of precursors was found to be d ϭ 500/(100 m) 2 , we assume that the measured absorption originates from the absorption of the precursor collection. Such an assumption is in agreement with several results [42][43][44] that revealed loss anomalies such as interface absorption and large root-mean-square absorption in optical samples. Therefore each precursor is assumed to absorb A p ϭ A/d ϭ 10 Ϫ8 of the incident light, a value that we now relate to size and complex index of particles.…”