A simple mode-locking technique for large-aperture TEA CO2 lasers

Abstract
A large‐aperture unstable‐resonator TEA CO2 oscillator has been mode locked by injection of nanosecond pulses chopped from the 1‐W output of a cw CO2 oscillator. Power gains of ∼1012 and a locking window of ∼200 ns have been observed.