Yb:CaF2: thermal effects in diode pumped high power multipass amplifiers (poster)

Florence Friebel (1) , Dimitrios N. Papadopoulos (2) , Patrice Camy (3) , J. -L. Doualan (3) , R. Moncorgé (3) , Patrick Georges (1) , Frédéric Druon (1)

1 Laboratoire Charles Fabry / Lasers
2 LULI - Laboratoire pour l'utilisation des lasers intenses
3 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique

Thermal and spectroscopic parameters suggest Yb-doped materials and in particular Yb:CaF 2 to be a good choice for diode pumped high power lasers [1-4]. In the frame of the Cilex-Apollon 10PW project we are developing new OPCPA pump sources based on those crystals [5]. We are presenting the last status of high-repetition rate multipass amplifiers based on Yb:CaF 2 developed in this project and how the exact measurement of the thermal lens allows us to optimize the design of the amplifier avoiding beam focusing and then to extract efficiently and reliably the energy without damaging the optics and access safely to a reliable stable regime within a 50 mJ-range.

Domains: Optics [physics.optics]

Florence Friebel, Dimitrios N. Papadopoulos, Patrice Camy, J. -L. Doualan, R. Moncorgé, et al.. Yb:CaF2: thermal effects in diode pumped high power multipass amplifiers (poster). 6th EPS-QEOD Europhoton conference : Solid State, Fibre, and Waveguide Coherent Light Sources, Aug 2014, Neuchatel, Switzerland. ⟨hal-01375893⟩