Regenerative CO2 Amplifier with Controlled Pulse Duration
This chapter reports on the construction of a regenerative TEA CO2 amplifier emitting a pulse train with the duration of individual pulses controlled in the range 10–40 ns, the time interval between them ~110 ns, and their total energy ~4 J. An injected pulse was formed by screening laser radiation by an optical breakdown plasma in air at the focus of a lens telescope. Good reproducibility of the temporal parameters of the injected pulse was ensured by injecting radiation from a cw frequency-stabilized CO2 laser into a master oscillator.