GAIN SATURATION FLUX AND STIMULATED EMISSION CROSS SECTION FOR THE 10.6 μ LINE OF CO2

Abstract
Gain saturation for the 10.6 μ transition of CO2 has been measured in a single‐pass configuration and the saturation flux found to be (22±2) W/cm2. Knowledge of the saturation flux and the inversion production rate provides an estimate of 3 × 10‐18 cm2 for the stimulated emission cross section of the transition.