Detection of three-photon relaxation of an atom near a phase conjugator through absorption measurements
Henk F. Arnoldus, Thomas F. George · Physical Review A · 1991
Spontaneous excitation of an atom near a phase conjugator should be amenable to experimental verification through a measurement of the atomic probe absorption profile. It is shown that the absorption decreases quickly with increasing reflectivity, due to a population of the excited state. The responsible physical process is a three-photon event.