Integrated microfluidic devices for high-order harmonic generation

Femtosecond Laser Irradiation followed by Chemical Etching is exploited to create microfluidic devices for High-order Harmonic Generation (HHG) in noble gases. A finetuning of the channels' diameter and length permits the production of high-order harmonics in completely different regimes, going from the hollow waveguiding regime to the sub-mm interaction regime. We envisage that the high adaptability of our microfluidic approach will allow us to integrate more functionalities in the same integrated device thus paving the way to palm-top HHG solutions.