High order interactions than dipole-dipole in Tm:Tm energy transfer

Akihisa Tomita, Jagdeep Shah, Dai‐Sik Kim +5 more

Anne Débarre

The experimental study of a laser-induced energy transfer for a dipole-dipole collisional interaction in a Na-Ca mixture is reported. A specific excitation scheme is used in this experiment for which the virtual level is optically excited. A comparison with the case of a dipole-dipole interaction in the Eu-Sr mixture where the virtual level is excited by collisional energy transfer is presented.

A. S. Agabekyan

Kang Long Yuan, Yao Liu, Zhongtao Ouyang +3 more

Förster resonant energy transfer between atoms separated at a distance of a few nanometers has strong relevance to different properties of matter. In this work, the resonant energy transfer rate is derived from the electric potential in a system with one dipole interacting with a separated 2D plane of dipoles. It shows an R − 2 ( R : distance between dipole and 2D plane of dipoles) dependency on the distance of dipole layers, which is different from previous theoretical evaluations with an R − 4 dependency. The electroluminescence (EL) properties are studied in different rare earth (Re: Tm, Tb, Ho, Yb, Er) distributed single atomic layer doped Al 2 O 3 nanolaminates prepared by atomic layer deposition, in which the distance between single atomic layers of Re 3+ is modulated at the atomic scale. Our theoretical results are consistent with the changes of EL intensity and decay time with the distance between the single atomic rare earth doping layers. This result is crucial for increasing the accuracy in biosensing and design of photonic materials.

F. Robicheaux

Catherine Bréchignac, Ph. Cahuzac, P. E. Toschek

High-resolution spectra of laser-induced collisional energy transfer between europium and strontium are obtained for collisional interactions which are dipole-dipole in nature. A universal profile is found for this laser-induced excitation. For the first time a precise comparison with available calculations is possible. The line core agrees well with a theory assuming a dipole-dipole coupling, but the quasistatic wing deviates from the asymptotic behavior expected for a pure dipole-dipole interaction.