RED glass-based microcavities enabling luminescence control - Université de Rennes Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

RED glass-based microcavities enabling luminescence control

Résumé

Optical microcavities are structures that enable confinement of light to microscale volumes. Moreover, depending on their geometrical, compositional and structural parameters such sub-wavelenght photonic systems allow a fine tailoring of the luminescence, when activated by luminescent species. Here we focus our attention on 1-D photonic crystals and on spherical microresonators, both of them activated by Er3+ ions. The glass-derived 1-D photonic crystal is a microcavity constituted by an erbium-doped layer sandwiched between two Bragg mirrors respecting a lambda/2 periodicity, where lambda is the desired operating resonance wavelength. This microcavity is fabricated by rf-sputtering. The spherical microresonator consists in a silica sphere with a diameter of about 150 µm coated with a erbium-doped silica-hafnia layer of about 1 µm in thickness. The spherical substrate is obtained by melting a fiber and the coating is achieved by sol gel dip-coating technique. The 1-D microcavities exhibits a significant quality factor The effect of the cavity on the 4I13/2→4I15/2 emission band is demonstrated by the narrowing of the emission band as well as by the enhancement of the Er3+ photoluminescence intensity. The Er3+ 4I13/2→4I15/2 luminescence, excited by the whispering gallery modes typical of these cavities, exhibits interesting properties as a function of the geometrical properties of the resonator.
Fichier non déposé

Dates et versions

hal-01152929 , version 1 (18-05-2015)

Identifiants

  • HAL Id : hal-01152929 , version 1

Citer

Davor Ristic, A. Lukowiak, A. Chiasera, A. Chiappini, Mile Ivanda, et al.. RED glass-based microcavities enabling luminescence control. 17th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL2014), Jul 2014, Wroclaw, Poland. ⟨hal-01152929⟩
73 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More