Local Density of Photonic States Probed By CL
Beyond the material composition, cathodoluminescence microscopy can be used to structures made of known materials, but with rich combinations of these. In this case, CL is capable of measuring the Local density of states (LDOS) of a nanostructured photonic medium, where the intensity of the emitted CL reflects directly the number of available photonic states. This is very relevant for materials like photonic crystals or complex topologies for which large LDOS variations are achieved on nanometer scales.
On the other hand, LDOS variations should be taken into account when analyzing standard CL maps.
Read more about this topic: Cathodoluminescence Microscope
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