Abstract
This thesis studied the photoluminescent properties of semiconductor nanomaterials in photonic microcavities. Glass spheres (3~ 10 micrometer) covered CdSe nano-dots (5.6 nm) are applied to microcavities. The emission (~620 nm, visible light spectrum) of the single microcavity is measured by Micro-PL system. Cavity mode, called Whispering Gallery Mode (WGM), is observed by us and explained by Mie theory. Observed phenomenon: Cavity enhancement (20 times), spacing between WGM (37 meV), small mode volume (1.3 × 10-12 cm3), spectrums of different polarizations (TE / TM), stimulated emission (320 kW/cm2), low temperature CdSe spectrum etc.