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Special glasses for infrared applications

J. PEDLIKOVA1, J. ZAVADIL2,* , O. PROCHAZKOVA2, D. LEZAL1

Affiliation

  1. Laboratory of Inorganic Materials, Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68 Rez, Czech Republic
  2. Institute of Radio Engineering and Electronics, Academy of Sciences of the Czech Republic, Chaberská 57, 182 51 Praha 8, Czech Republic

Abstract

Selected sulphide, selenide and telluride glass systems together with TeO2 based heavy metal oxide ones have been prepared and investigated by SEM and low-temperature photoluminescence spectroscopy. Glasses without crystalline particles, clusters and chemical inhomogeneities have been prepared by direct synthesis from pure starting elements and compounds. Homogeneity of rare earth (Pr, Er) doped glasses depends on the kind of RE3+ ions, their concentration and chemical forms in which they were added. We have investigated the 4f-4f inner shell radiative transitions of Er3+ and Pr3+ ions incorporated into various glass hosts. All relevant radiative transitions of Er3+ and Pr3+ have been observed in GeGaS and GeGaAsS systems. As far as Er is concerned the same applies to As2S2Se and As2Se3 glass systems, while only a peculiar Pr3+ transition at 1590 nm is seen in these selenide systems. Er doped tellurides exhibit strong luminescence of Er3+ at 1539 nm while only a weak peak at 1590 nm has been found for Pr doped ones. No restriction of Pr3+ radiative transitions is observed in TeO2 related heavy metal oxide glass systems..

Keywords

Rare-earth elements, Chalcogenide glasses, Heavy metal oxide glasses, Low-temperature photoluminescence.

Submitted at: Nov. 14, 2006
Accepted at: June 15, 2007

Citation

J. PEDLIKOVA, J. ZAVADIL, O. PROCHAZKOVA, D. LEZAL, Special glasses for infrared applications, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 6, pp. 1679-1682 (2007)