3. Optical transitions between rare-earth levels

3.1 Radiative and non-radiative transitions between 4f levels

Transitions between the levels described above can be either radiative, with photon emission, or non-radiative, with no photon emission but phonon emission, or vibronic, with partial photon and phonon emission. Radiative emissions are either electrically dipolar or magnetically dipolar. Radiative transitions are usually characterized by their "oscillator strength", which are pure numbers less than 1 characterizing the intensity of a transition. The oscillator forces for an unpolarized transition i to j are defined in vacuum by :

f_{ij} = \frac{2 m ω}{3 ℏ e^{2} {(4 {πε}_{0})}^{- 1}} {| M_{ij} |}^{2}

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Optical transitions between rare-earth levels

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Interactions between rare earth ions

Bibliography

(1) - AUZEL (F.) - Coherent emission in rare-earth materials. - Handbook on the Physics and Chemistry of Rare-Earths, edit. by GSCHNEIDER (K.A.) et EYRING (L.), Elsevier Science, vol. 22, p. 507-606 (1996).
(2) - BLASSE (G.), GRABMEIER (B.C.) - Luminescent...

Research laboratories

Here is a list of some of the research laboratories involved in rare earth ions.

In France :

Institut de recherche de chimie Paris, École nationale supérieure de chimie de Paris IRCP-Chimie-Paristech – Team MPOE http://www.ircp.cnrs.fr/spip.php?article6

...

Events

JNCO: training course organized every two years by the CNRS CMDO ⁺ network and the SFO's "Club des Cristaux pour l'Optique". http://cmdo.cnrs.fr http://www.sfoptique.org/pages/les-clubs-sfo/

ICL: International...