Abstract
Laser dye Rhodamine B was incorporated at different concentrations in GMA polymer, sol-gel glass and organic-inorganic hybrid material synthesized using the sol-gel process. The amplified spontaneous emission (ASE) was studied using Nd-YAG laser of 532 nm. The effect of laser excitation in transfer pumping configuration and the influence of dye concentration on the ASE were studied. Also, the gain and the energy conversion efficiencies were investigated. Relatively high efficiencies (to similar to 48%) were obtained with good photostabilities where a decrease to similar to 30% of the initial amplified spontaneous emission output energy were observed after pumping by 35000 shots at relatively high repetition rate (10 Hz) and energy (15 mJ). The composition and the properties of the matrix were found that optimize the laser performance and photostability of an investigated dye.