Figure 3
From: Propagation of optically tunable coherent radiation in a gas of polar molecules

Generated signal for different concentrations N in the medium with (blue) and without (gray) relaxations. The driving field’s amplitude was set to \(A=515\) V/cm. (a) Concentration \(N=6.7\times 10^{12}\) molecules/\(\hbox {cm}^3\). (b) \(N=6.7\times 10^{13}\) molecules/\(\hbox {cm}^3\). (c) \(N=6.7\times 10^{14}\) molecules/\(\hbox {cm}^3\).