Random Lasers: Active Mode Control and Gating

The ability to control the flow of energy in a random medium has a wide range of potential applications. However, the mechanisms underlying signal processing and transport in the presence of disorder are mostly unknown. Random lasers (RL) are light sources based on disordered active media, such as intergalactic powders or laboratory synthesized micron-sized titanium dioxide resonators randomly distributed in a dye-doped solution.