A New "Double Resonance" Method for Investigating Atomic Energy Levels. Application toHg P13

Abstract

Excitation of atoms in a vapor by polarized light produces unequal population of the magnetic sublevels of the excited state. The emitted optical resonance radiation is therefore partly polarized. The application of radiofrequency or microwave fields at a magnetic resonance frequency will induce transitions between sublevels of the excited state. The degree of polarization of the emitted optical resonance radiation is altered when the magnetic resonance condition is fulfilled. As suggested by Brossel and Kastler, this effect may be used to reveal the structure of the energy level. A detailed theory applicable to, and experiments on the 3 Pi state of all the isotopes of mercury are reported. The results obtained indicate that double resonance phenomena constitute a valuable new tool for investigating the structure of atomic energy levels. The mean life of the 3 Pi state is shown by observations on the resonance line widths to be 1.55X 10~7 sec for all the isotopes. The g-faetor of the Z P\ state for isotopes with zero spin, measured in terms of the proton g-factor, is 1.4838±0.0004. 5 S. H. Autler and C.

Theory of double resonance magnetometers based on atomic alignment

“…This double resonance technique [1] has not only proven useful for investigating atomic structure, for measuring properties of atoms, their constituents, and their interactions, but has also led to important applications in atom cooling, optically pumped frequency standards, and optical magnetometers.…”

Optically detected magnetic resonance of molecules in excited triplet states

“…16 could also be applied to solids. The experiment was performed using a hiSh rcoolution optico.l spectrometer to monitor the chango in intensity of one of the Zeeman components of the fluorescent light…”

Optical control of the spin of a magnetic atom in a semiconductor quantum dot

“…In the recent years, several quantum optics effects first demonstrated in atoms have been observed on individual QDs. For instance, resonant optical pumping [4] has been successfully used to prepare the spin of an individual electron [5] or hole [6] localized in a QD. The possibility to use a strong resonant continuous wave laser field to create hybrid matter-field states [7] and manipulate QDs states in their solid environment has also been demonstrated in different QD systems [8].…”