Radiative Renormalization Analysis of Optical Double Resonance

Abstract

The problem of optical double resonance as shown in the Figure is a familiar one in optics.[1-3] In this case, a near-resonant field at frequency ν l connects level 1 with level 2 while a near resonant field at frequency v u connects level 2 with level 3. When level 2 is below level 3, the excitation of level 3 involves two photon absorption; if level 2 is above level 3, the excitation of level 3 is a Raman process.