Absorption spectra and luminescence of oxygen-deficient centres in titanosilicate glass synthesised in a steady laser plume. II. Luminescence

Journal Article · Sat Feb 28 00:00:00 EST 1998 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1998V028N02ABEH001163· OSTI ID:21439414

Lebedev, V F ^[1]; Medvedkov, O I ^[2]

---

1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)

The luminescence spectra of titanosilicate glasses, grown in a steady laser plume in an atmosphere of air or nitrogen at normal pressure, were investigated in the spectral range 260-500 nm. The luminescence was excited by the second harmonic of a cw Ar{sup +} laser ({lambda} =257nm) and was observed for glasses synthesised in air and nitrogen atmospheres throughout the investigated range of the titanium concentrations by weight (from {approx}0.1% to {approx}6%). When the titanium concentration was less than 1%, the luminescence spectrum of glass grown in a nitrogen atmosphere had a band with a maximum at {lambda} {approx} 280 nm associated with silicon oxygen-deficient centres and a correlated new strong band with a maximum at {lambda} {approx} 380 nm. An increase in the Ti concentration from {approx}0.1% to {approx}0.4% resulted in an exponential fall (by a factor of {approx}4) of the intensity of the 280 nm luminescence band accompanied by a rise of approximately 30% in the intensity of the luminescence in the 380 nm band. Luminescence in the range 350-500 nm was observed in glass grown in a nitrogen atmosphere when the titanium concentration was {approx}1%-2%. Glass grown in air there had a wide band in the luminescence spectrum and its maximum was near {approx} 440 nm (titanium concentration {approx}2%) and a band attributed to the Ti{sup 4+} luminescence (with a maximum near {approx}420 nm when the titanium concentration was 3%-6%). (active media)

• OSTI ID: 21439414
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 28, Issue 2; Other Information: DOI: 10.1070/QE1998v028n02ABEH001163; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
AIR
ARGON IONS
GLASS
LASERS
LUMINESCENCE
NITROGEN
OXYGEN
PLUMES
TITANIUM
TITANIUM IONS
TITANIUM SILICATES
CHARGED PARTICLES
ELEMENTS
EMISSION
FLUIDS
GASES
IONS
METALS
NONMETALS
OXYGEN COMPOUNDS
PHOTON EMISSION
SILICATES
SILICON COMPOUNDS
SPECTRA
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS