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Title: Structural features of silver-doped phosphate glasses in zone of femtosecond laser-induced modification

Femtosecond (fs) laser writing of two-dimensional microstructures (waveguides) is demonstrated in bulk phosphate glasses doped with silver ions. Silver-content phosphate and silver-content niobium–phosphate glasses with high concentration of silver oxide 55 mol% were used as samples for fs laser writing. The chemical network structure of the synthesized samples is analyzed through Raman spectroscopy and was found to be strongly sensitive to Nb incorporation. It was found that the direct laser writing process enables not only reorganization of glass network, but also formation of color centers and silver nanoparticles that are revealed in appearance of luminescence signal and plasmon absorption. The process of NPs' formation is more efficient for Nb-phosphate glass, while color centers are preferably formed in phosphate glass. - Graphical abstract: Formation of silver NPs on the surface of 0.5Ag{sub 2}O–0.4P{sub 2}O{sub 5}–0,1Nb{sub 2}O{sub 5} glass induced by CW laser irradiation. - Highlights: • The structure of 0.5Ag{sub 2}O–0.1Nb{sub 2}O{sub 5}–0.4P{sub 2}O{sub 5} and 0.55Ag{sub 2}O–0.45P{sub 2}O{sub 5} glasses was investigated by Raman spectroscopy. • Fs laser writing induces formation of silver NPs in investigated glasses. • Surface plasmon resonance in the absorption spectra confirms the formation of NP. • The possibility of CW laser induced formation of silvermore » NPs on the surface of sample with niobium is shown.« less
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ;  [4] ;  [1]
  1. Saint-Petersburg State University, Institute of Chemistry, Saint-Petersburg (Russian Federation)
  2. Saint-Petersburg State University, Department of Physics, Saint-Petersburg (Russian Federation)
  3. St.Petersburg State Polytechnical University, St.Petersburg (Russian Federation)
  4. (Russian Federation)
Publication Date:
OSTI Identifier:
22486788
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 230; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTRA; COLOR CENTERS; CONCENTRATION RATIO; DOPED MATERIALS; LASER RADIATION; LUMINESCENCE; MICROSTRUCTURE; NANOPARTICLES; NIOBIUM; NIOBIUM OXIDES; PHOSPHATE GLASS; PHOSPHATES; PLASMONS; RAMAN SPECTROSCOPY; SILVER IONS; SILVER OXIDES; SURFACES