Glass-ceramics coating of silica microspheres

Author

Alombert-Goget, Guillaume ; Armellini, Cristina ; Berneschi, Simone ; Chiasera, Alessandro ; Cosi, Franco ; Conti, Gualtiero Nunzi ; Féron, Patrice ; Ferrari, Maurizio ; Lunelli, Lorenzo ; Moser, Enrico ; Pederzolli, Cecilia ; Righini, Giancarlo C.

Author_Institution

CNR-IFN, CSMFO Lab., via alla Cascata 56/C, Povo, 38123 Trento, Italy

fYear

2009

fDate

10-12 Dec. 2009

Firstpage

1

Lastpage

4

Abstract

Silica spheres with diameters in the order of 100 µm were coated by Er³⁺-activated silica-hafnia films and then annealed in order to induce formation and growth of nanocrystals. The spectroscopic and morphologic properties of the spheres have been characterized by photoluminescence and atomic force microscopy techniques, respectively. The preliminary information are discussed, taken in account the previous consolidated results obtained in the case of amorphous and glass-ceramic waveguides as well as spherical microresonators coated by amorphous silica-hafnia films.

Keywords

Amorphous materials; Annealing; Atomic force microscopy; Coatings; Erbium; Microcavities; Nanocrystals; Photoluminescence; Silicon compounds; Spectroscopy; coatings; erbium; microspheres; optical properties; planar waveguides; transparent glass-ceramics;

fLanguage

English

Publisher

ieee

Conference_Titel

ICTON Mediterranean Winter Conference,2009. ICTON-MW 2009. 3rd

Conference_Location

Angers

Print_ISBN

978-1-4244-5745-8

Electronic_ISBN

978-1-4244-5746-5

Type

conf

DOI

10.1109/ICTONMW.2009.5385639

Filename

5385639