skip to main content

SciTech ConnectSciTech Connect

Title: Role of oxygen hole centres in the photodarkening of ytterbium-doped phosphosilicate fibre

We have studied the photodarkening in active fibres with an ytterbium-doped phosphosilicate glass core under IR irradiation with a pump source (920 nm) and UV irradiation (193 nm). Analysis of absorption and luminescence spectra suggests that such irradiations produce phosphorus – oxygen – hole centres (P-OHCs) in the core glass network and lead to the reduction of the ytterbium ions to a divalent state (Yb{sup 2+}). The photoinduced optical loss in the fibres in the visible range (400 – 700 nm) is mainly due to absorption by the P-OHCs. A quantum-mechanical model is proposed for P-OHC and Yb{sup 2+} formation. (nonlinear optical phenomena)
Authors:
; ; ; ;  [1] ; ; ;  [2] ; ;  [3]
  1. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)
  2. G.G.Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)
  3. Research Computing Center M.V. Lomonosov Moscow State University, Russia, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22373682
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 43; Journal Issue: 11; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DOPED MATERIALS; FIBERS; HOLES; LUMINESCENCE; NONLINEAR PROBLEMS; OXYGEN; PHOSPHORUS; QUANTUM MECHANICS; SILICATES; YTTERBIUM; YTTERBIUM IONS