Features of Copper Vapor Laser Emission Excited by Pulse-Periodic HF Discharge

Dependence of induction copper vapor laser radiation on the parameters of RF discharge and the optical cavity

“…As shown previously in [5,8], pulsed behavior of the Joule heat release W pl (t) = J 2 2 (t)•R pl (t) in the RF discharge plasma (R pl (t) is the electrical resistance of a plasma turn) leads to a substantial pulsation of the electron temperature T e . In this work, for comparison, the laser pulses W las (t) and the inverse population of working levels D(t) = (n r − n m g r /g m ) are presented at both high (figure 2) and low (figure 3) values of the repetition rate f .…”

“…It is likely that with further optimization of the specified parameters, it would be possible to obtain a complete decomposition of W las into five separate pulses. We obtained an analogous effect (decomposition of a single pulse into two separate pulses) in a numerical experiment [4,8] at lower frequencies of RF current oscillations (f tr = 9.8 MHz and f = 10 kHz). Moreover, we also demonstrated the possibility of controlling the amplitude of these pulses by varying the voltage U(0).…”

“…A physical model of an ICVL was thoroughly described in our works [1][2][3][4][5][6][7][8]. In addition to the equations describing the dynamics of non-equilibrium plasma parameters, it comprises the equations for the intensity evolution of induced laser radiation (spectral density) inside a cavity.…”