François Balembois
1Université Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry, 91(1) Université Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry (2) Laboratoire pour l’Utilisation des Lasers Intenses (LULI), CNRS, Ecole polytechnique, CEA - francois.balembois@institutoptique.frH. Taleb(1), C. Le Blanc(1,2), E. Thellier(1), P. Pichon(1), F. Druon(1), F. Balembois(1), and P. Georges(1)
LED offer new opportunies as pump source for laser material: as rugged and low cost as flashlamps, and with the stability and the lifetime of semiconductors. They allow to explore an intermediate regim where flashlamp and laser diode are not optimized : pump energy at the Joule level and repetition rate at 100 Hz. Coupled with Ce:YAG luminescent concentrators, it offers energy in the range 100 mJ -1 J between 550nm and 650nm, in the yellow gap for semi-conductors. This allows to pump transition metal lasers like Ti:sapphire, alexandrite or Cr:LiSAF. In this presentation, we describe our work on Cr:LiSAF LED-pumped amplifiers : regenerative amplifier and multipass amplifier.
François Balembois is professor at Institut d’Optique, Laboratoire Charles Fabry, Université Paris-Saclay. His research topic is the development of new laser sources. He started to explore the potential of LED pumping for laser sources ten years ago and developped different LED pumped lasers sources including transition metal laser like Ti:sapphire, alexandrite and Cr:LiSAF