OPTICAL SOURCES HAVING A STRONGLY SCATTERING GAIN MEDIUM PROVIDING LASER- LIKE ACTION

摘要

A method for identifying an object, comprising the steps of: providing individual ones of objects within a predetermined class of objects with a gain medium comprised of an electromagnetic radiation emitting and amplifying first phase and an electromagnetic radiation scattering second phase, the gain medium being responsive to electromagnetic radiation having a first-wavelength for emitting electromagnetic radiation with wavelengths within a predetermined band of wavelengths; irradiating the objects with the first wavelength; detecting an emission from the irradiated objects, the emission including one or more second wavelengths that are within the predetermined band of wavelengths; and indentifying an object as belonging to a predetermined class of objects from the detected emission.