was a challenging experiment in the past, often done on klunky, home-made devices can now be done easily and efficiently. Attolight is now changing the landscape: its innovative approach brings nanometer resolution as well as pico-second timing for time-resolved studies, regardless of the wavelengths used. While any material that emits light under electron irradiation can be studied by CL, it is particularly valuable in material studies of semi-conductor materials, phosphor, ceramic, rock and glass. Combining LM, EM with hyperspectral imaging, Attolight’s solution reveals ultra-trace impurities and crystallographic defects not visible using other imaging modalities.