Share Email Print
cover

Proceedings Paper

Fabrication and optical assessment of sol-gel-derived photonic bandgap dielectric structures
Author(s): A. Chiappini; C. Armellini; S. N. B. Bhaktha; A. Chiasera; M. Ferrari; Y. Jestin; M. Mattarelli; M. Montagna; E. Moser; G. Nunzi Conti; S. Pelli; G. C. Righini; V. M. Sglavo
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present the details of the Sol-gel processing used to synthesize silica spheres, with particular attention to the conditions that permit to tailor their dimension. We have elaborated a protocol in order to obtain silica micro spheres with low polydispersivity and we have demonstrated that large well-ordered crystals of synthetic opal, that exhibit a photonic stopband, can be produced in few days by vertical deposition and evaporation-assisted sedimentation deposition methods. Scanning electron microscope was employed to characterize the samples reflectance and transmission measurements were used to put in evidence the high quality of the realized opals. Starting from the silica spheres, core-shell-like Er3+-activated silica spheres were also prepared, where the core is the silica sphere and the shell is an Er2O3-SiO2 coating. Morphologic, structural and spectroscopic properties were investigated by scanning electron microscope and luminescence spectroscopy. The emission of 4I13/24I15/2 of Er3+ ion transition with a 27 nm bandwidth was observed upon excitation at 514.5 nm. The 4I13/2 level decay curves presented a single-exponential profile, with a lifetime of 12.8 ms.

Paper Details

Date Published: 18 April 2006
PDF: 10 pages
Proc. SPIE 6182, Photonic Crystal Materials and Devices III (i.e. V), 618223 (18 April 2006); doi: 10.1117/12.663445
Show Author Affiliations
A. Chiappini, Univ. di Trento (Italy)
C. Armellini, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
S. N. B. Bhaktha, Univ. di Trento (Italy)
Univ. of Hyderabad (India)
A. Chiasera, Nello Carrara Institute of Applied Physics, IFAC-CNR (Italy)
Enrico Fermi Ctr. (Italy)
M. Ferrari, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
Y. Jestin, CNR, Istituto di Fotonica e Nanotecnologie (Italy)
M. Mattarelli, Univ. di Trento (Italy)
M. Montagna, Univ. di Trento (Italy)
E. Moser, Univ. di Trento (Italy)
G. Nunzi Conti, Nello Carrara Institute of Applied Physics, IFAC-CNR (Italy)
S. Pelli, Nello Carrara Institute of Applied Physics, IFAC-CNR (Italy)
G. C. Righini, Nello Carrara Institute of Applied Physics, IFAC-CNR (Italy)
V. M. Sglavo, Univ. di Trento (Italy)


Published in SPIE Proceedings Vol. 6182:
Photonic Crystal Materials and Devices III (i.e. V)
Richard M. De La Rue; Pierre Viktorovitch; Ceferino Lopez; Michele Midrio, Editor(s)

© SPIE. Terms of Use
Back to Top