Perovskite Materials for Optical Filtering and the Generation of Coherent Radiation

摘要

Perovskite materials are promising candidates for the generation of tunable coherent radiation by means of non-linear optical processes. On the other hand they are also applicable for protecting electrooptical sensors against the same type of radiation by virtue of their photorefractive properties, by doping with impurity atoms. Photorefractive mateirals have been put to use in integrated optics for optical switching, resonant filtering and holograpic memories. Most of the basic functional processes needed for itnegrated optics are the same as those needed to protect electrooptical sensors, but in addition a protective device will have to provide image quality and deal with incoming radiation that is not known a priori. This is a far greater challenge, and the search for materials that can do the job also includes other solid state materials, gas plasma cells, and soft condensed matter systems.