Development of an efficient 9-kW 496-μm CH3F laser oscillator

Abstract
A 496‐μm CH3F cavity laser characterized by an average power of 9 kW and predominant single longitudinal mode operation with a linewidth of 28 MHz has been constructed. The power conversion efficiency of the laser (CH3F power out/CO2 pump power in) is on the order of 1.5×10−3. The CH3F gas is pumped in a zig‐zag fashion by the CO2 laser radiation.