By injection of manosecond pulses from an AM mode-locked TEA CO2 laser in a passive mode-locked multi-atmosphere TE CO2 laser the shot-to-shot reproducibility of the generated subnanosecond pulses was increased to almost 100%.
van Goor, F. A. (1986). Increased reliability of passive mode-locking a multi-atmosphere TE CO2 laser by injection mode-locking. Optics communications, 57(4), 254-256. https://doi.org/10.1016/0030-4018(86)90093-3