Response to modulation of parameters in the vibro-rotational model for a CO2 laser

Abstract

Abstract. The response of a single mode CO2 laser to modulation of pump, loss, and cavity length based on the vibro-rotational model is analysed and compared with similar analyses for the two-level rate equation model for laser action.

Determination of dynamical parameters of a CO2 laser by fitting theoretical equation with experimental data

“…In that fitting, the polarization relaxation rate of the medium had to be cited from other literature. In this paper, we developed a new method to measure the dynamical parameters independently by using the laser cavity modulation process [2]. The laser dynamics is described by the reduced equations including vibro-rotational levels [3] dI/dt = where I and D are the suitably normalized variables for the laser intensity and the population difference between upper and lower laser levels, respectively, with decay rates 2 K and y II (we use K for the decay rate of the electric field in the laser cavity).…”