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Proceedings Paper

Fabrication and characterization of confined structures for sensing and lasing applications
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Paper Abstract

Huge confinement of light over micro and nano structures is finding various applications in the field of photonics. In this letter the results obtained over two different kinds of confined structures viz., (i) Metallo-Dielectric colloidal structures (MDCS), obtained by immobilization of metallic gold (Au) nanoparticles on the dielectric silica network of inverse silica opal matrix and (ii) Rare-earth activated silica-hafnia film coated silica microresonator is presented in detail. The structural, optical and spectroscopic assessments of these systems are giving an evidence to have applications in the field of sensing and lasing. Preliminary results on MDCS used as surface enhanced Raman scattering (SERS) substrate shows an evidence that an increase of the Raman signal with respect to that observed for other metallic and dielectric structures.

Paper Details

Date Published: 24 August 2011
PDF: 8 pages
Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 817317 (24 August 2011); doi: 10.1117/12.897908
Show Author Affiliations
Sriram Guddala, Univ. of Hyderabad (India)
CSMFO Lab., CNR-IFN (Italy)
Univ. of Trento (Italy)
A. Chiappini, CSMFO Lab., CNR-IFN (Italy)
G. Alombert-Goget, CSMFO Lab., CNR-IFN (Italy)
C. Armellini, CSMFO Lab., CNR-IFN (Italy)
Fondazione Bruno Kessler (Italy)
M. Ferrari, CSMFO Lab., CNR-IFN (Italy)
Shadak Alee K., Univ. of Hyderabad (India)
Narayana Rao D., Univ. of Hyderabad (India)
A. Chiasera, Univ. of Hyderabad (India)
E. Moser, CSMFO Lab., CNR-IFN (Italy)
Univ. of Trento (Italy)
S. Berneschi, Museo Storico Enrico della Fisica, Ctr. di Studi e Ricerche Enrico Fermi (Italy)
Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
G. Nunzi Conti, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
G. C. Righini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
P. Féron, Lab. d'optronique, CNRS (France)


Published in SPIE Proceedings Vol. 8173:
Photonics 2010: Tenth International Conference on Fiber Optics and Photonics
Sunil K. Khijwania; Banshi D. Gupta; Bishnu P. Pal; Anurag Sharma, Editor(s)

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