Fabrication of a Random Laser by Embedding Copper Oxide Nanoparticles in Nonmetallic Host Media.

In this work, a simple, low-cost method for fabricating random gain media from Rhodamine B dye solution containing highly-pure CuO nanoparticles in transparent resin hosts is proposed. The spectroscopic characteristics of the dye solution samples were investigated with varying dye concentrations, along with nanoparticles of different particle sizes and concentrations. The fabricated samples were excited using two laser sources (405 and 530 nm) to record the fluorescence spectra.