Multiphonon-assisted anti-Stokes and Stokes fluorescence of triply ionized rare-earth ions

Journal Article · Mon Mar 01 04:00:00 EST 1976 · Journal of Luminescence

DOI:https://doi.org/10.1016/0022-2313(76)90166-6· OSTI ID:4033392

Auzel, F.

Experimental demonstration of multiphonon-assisted anti-Stokes and Stokes excitation of rare-earth ions (R$sup 3+$) in different hosts, that is, in a weak-coupling ion-lattice interaction case, is obtained. An exponential behavior of excitation probabilities with respect to energy difference between excitation and electronic line is found just as for multiphonon-assisted nonradiative decay and energy transfer. Exponential parameters $alpha$/sub As/ and $alpha$/sub S/ for anti-Stokes and Stokes excitation are measured and linked to the Miyakawa-Dexter $alpha$ parameter for decay, leading to estimates for Pekar-Huang-Rhys coupling parameter S$sub 0$ of about 0.04, in agreement with values obtained from one-phonon spectra or nonradiative-decay measurements. A semiempirical formula is deduced to obtain $alpha$ from only one parameter, an effective phonon energy.

• Research Organization: Centre National d'Etudes des Telecommunications, 196 rue de Paris, 92220 Bagneux, France
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-030367
• OSTI ID: 4033392
• Journal Information: Journal of Luminescence, Journal Name: Journal of Luminescence Journal Issue: C Vol. 12-13; ISSN 0022-2313
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

*IONS-- FLUORESCENCE
*RARE EARTHS-- FLUORESCENCE
360603* --Materials--Other Materials--Properties
EXCITATION
N50330* --Metals
Ceramics
& Other Materials--Plastics & Other Materials--Properties
Structure & Phase Studies
PHONONS
STOKES PARAMETERS