Blue laser action by the rare-gas halide trimer Kr2F

Abstract
Blue Kr2F excimer laser emission centered at 430 nm has been achieved in electron‐beam‐pumped high‐density Ar/Kr/Nf3 mixtures. An output power of about 5 kW has been obtained. The spectral bandwidth is 25 nm for a simple two‐mirror resonator with a potential tuning range between 380 and 480 nm.