Feasibility considerations of a soft-x-ray distributed feedback laser pumped by an x-ray free electron laser

Jean-Michel André (1) , Karine Le Guen (1) , Philippe Jonnard (1)

1 LCPMR - Laboratoire de Chimie Physique - Matière et Rayonnement

We discuss the feasibility of a soft-x-ray distributed feedback laser (DFL) pumped by an x-ray free electron laser (X-FEL). The DFL under consideration is a Mg/SiC bi-layered Bragg reflector pumped by a single X-FEL bunch at 57.4 eV, stimulating the Mg L2,3 emission at 49 eV corresponding to the 3s-3d →2p1/2,3/2 transition. Based on a model developed by Yariv and Yeh and an extended coupled-wave theory, we show that it would be possible to obtain a threshold gain compatible with the pumping provided by available X-FEL facilities.

Mots clés: soft-x-ray distributed feedback laser; multilayer Bragg reflector; x-ray free electron laser

Domaines: Optique [physics.optics]

Jean-Michel André, Karine Le Guen, Philippe Jonnard. Feasibility considerations of a soft-x-ray distributed feedback laser pumped by an x-ray free electron laser. Laser Physics, 2014, 24 (8), pp.085001. ⟨10.1088/1054-660X/24/8/085001⟩. ⟨hal-01011251⟩