Rotational, Vibrational and Translational Temperatures for Regular and Sequence Band Transitions in Waveguide CO2 Laser.

From small signal gain measurement for the regular and sequence band transitions in the waveguide laser medium, the rotational temperature and the vibrational temperature of the ν3 mode are determined and compared with those in the ordinary laser medium. The rotational temperature is well defined and is apparently higher than the translational temperature. The vibrational temperature shows saturation behavior as a function of discharge current density and this is caused by electron deexcitation at higher vibrational levels.