Highly fluorescent silver nanoclusters in alumina-silica composite optical fiber

Journal Article · Mon Jan 05 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4905439· OSTI ID:22395631

Halder, A.; Chattopadhyay, R.; Majumder, S.; Paul, M. C.; Das, S.; Bysakh, S.; Unnikrishnan, M. ^[1]

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1. Material Characterization Division, CSIR-Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata 700032 (India)

An efficient visible fluorescent optical fiber embedded with silver nanoclusters (Ag-NCs) having size ∼1 nm, uniformly distributed in alumina-silica composite core glass, is reported. Fibers are fabricated in a repetitive controlled way through modified chemical vapour deposition process associated with solution doping technique. Fibers are drawn from the transparent preforms by conventional fiber drawing process. Structural characteristics of the doped fibers are studied using transmission electron microscopy and electron probe micro analysis. The oxidation state of Ag within Ag-NCs is investigated by X-ray photo electron spectroscopy. The observed significant fluorescence of the metal clusters in fabricated fibers is correlated with electronic model. The experimentally observed size dependent absorption of the metal clusters in fabricated fibers is explained with the help of reported results calculated by ab-initio density functional theory. These optical fibers may open up an opportunity of realizing tunable wavelength fiber laser without the help of rare earth elements.

• OSTI ID: 22395631
• Journal Information: Applied Physics Letters, Vol. 106, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ALUMINIUM OXIDES
CHEMICAL VAPOR DEPOSITION
DENSITY FUNCTIONAL METHOD
DOPED MATERIALS
ELECTRON MICROPROBE ANALYSIS
FLUORESCENCE
GLASS
NANOSTRUCTURES
OPTICAL FIBERS
RARE EARTHS
SILICA
SILVER
SOLID CLUSTERS
TRANSMISSION ELECTRON MICROSCOPY
VALENCE
X-RAY PHOTOELECTRON SPECTROSCOPY