Organic optofluidic devices produced by femtosecond laser micromachining

We report on innovative application of microchannels, fabricated by femtosecond laser irradiation followed by chemical etching. This technique allows us to demonstrate a novel approach to the achievement of organic photonic devices, where the unique properties of a conjugated polymer in solution are exploited in a microfluidic configuration in order to produce an easy-to-integrate photonic device. Filling the microchannel with a diluted polyfluorene solution and by dispersing nanoparticles in the solution we are able to achieve random lasing in the microchannel.