Vol. 22, issue 05, article # 2

Kochanov V. P. . Light generation without population inversion in schemes of stimulated Raman and hyper-Raman scattering on allowed atomic transitions. // Optika Atmosfery i Okeana. 2009. V. 22. No. 05. P. 420-427 [in Russian].
Copy the reference to clipboard
Abstract:

The theory of stimulated Raman and hyper-Raman light scattering on resonant transitions onto a ground state of atoms is developed in a model of three-level cascade quantum system. The possibility of effective light generation without population inversion is shown for all three transitions in a Raman scheme and for two dipole-allowed transitions in the case of hyper-Raman scattering. The regions of existence of such generation are revealed subject to intensities of three waves involved into a ring field composition, theirs sum phase, and pumping frequency detuning off dipole-forbidden transition frequency. A new method of remote sensing atomic impurities of atmosphere is proposed, which is based on generation without population inversion and in perspective is much more sensitive than the common fluorescent method.

Keywords:

radiation generation; Raman scattering; population inversion; resonance transitions