EFFECT OF FOREIGN GAS ON PEAK POWER AND ROTATIONAL RELAXATION FOR OPTICALLY PUMPED CO-2 4.3 MU-M LASER

From the peak output power measurement for the optically pumped CO2 4. 3 mu m pulse laser, the effect of foreign gas and the molecular dynami cs are examined. For the CO2 4.3 mu m and 10.6 mu m pump sequence lase r pulses occurring in the same discharge tube, the optimization of the peak output power is discussed. The J-profile of delay time from the start of the pump sequence pulse to the peak of the 4.3 mu m laser pul se indicates that rotational relaxation due to CO2-CO2 collision via \ Delta J\ = 2 transition occurs, and also suggests the inclusion of the \Delta J\ > 2 transition process.