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• Segonds, P
• Joly, S
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Materials 2010, 3(4), 2474-2482; doi:10.3390/ma3042474

Article

Layer-Inversion Zones in Angular Distributions of Luminescence and Absorption Properties in Biaxial Crystals

Yannick Petit ^1,2,* , Patricia Segonds ¹ , Simon Joly ¹  and Benoît Boulanger ¹

¹ Institut Néel CNRS/UJF, 25 rue des Martyrs, BP 166, F38402 Grenoble Cedex 9 France ² Université de Genève, 20 rue de l’Ecole de Médecine, CH-1211 Genève 4, Switzerland

* Author to whom correspondence should be addressed.

Received: 13 January 2010 / Accepted: 29 March 2010 / Published: 31 March 2010

(This article belongs to the Special Issue Luminescent Materials)

Download PDF Full-Text [421 KB, uploaded 31 March 2010 13:30 CEST]

Abstract: We numerically depict the complete angular distributions of luminescence and absorption properties in biaxial media, by calculating the imaginary part of the optical index for all directions of propagation. Our simulations show a double-layer surface with specific topology and symmetry properties that greatly differ from those of the refractive index surface. Our calculations show that the two layers intersect and inverse themselves along continuous loci related to polarization-independent luminescence or absorption properties. Specificities related to the orthorhombic, monoclinic and triclinic biaxial crystal systems are discussed. Such theoretical developments should be considered to fully exploit innovating luminescent materials.

Keywords: crystal optics; biaxial crystals; linear spectroscopy; luminescent materials

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