Générer des impulsions de lumière visible sans compression

An international collaboration involving researchers from the CPHT has revealed a new technique for generating short pulses of visible light. By injecting an infrared laser pulse into a hollow fiber, researchers from the Institut National de la Recherche Scientifique (Canada) have been able to create very short pulses of visible light at the exit, without needing to compress them. This technique takes advantage of the multimode nature of the fiber to promote the transfer of infrared energy to the visible region of the spectrum.

Arnaud Couairon, CNRS research director at CPHT and Jeffrey Brown (post-doctoral fellow at CPHT from 2016 to 2019) participated in developing the theoretical model of this phenomenon with their collaborators from the University of Louisiana (USA) and Heriot-Watt University (Scotland). Their work has been published in the prestigious journal Nature Photonics.