Synthesis, crystal growth and second harmonic generation properties of trivalent rare-earth-doped non-linear tungsten-bronze-type structure Ba2Na1-3xRExNb5O15 (RE = Sc, Y, La, Gd, Yb and Lu)

A. Yoshikawa, H. Itagaki, T. Fukuda, K. Lebbou, A. El Hassouni, A. Brenier, C. Goutaudier, O. Tillement, G. Boulon

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23 Citations (Scopus)

Abstract

A new compound filled tungsten-bronze-type structure Ba2Na1-3xRExNb5O15 (trivalent rare-earth ions: RE3+ = Sc3+, Y3+, La3+, Gd3+, Yb3+ and Lu3+, with x = 0.02) has been prepared by selecting RE3+ ions without any absorption in the visible range. The effect of rare-earth addition on micro-twin formation, that is to say, tetragonal-orthorhombic ferroelastic phase transition in barium sodium niobate was investigated and micro-twin formation could be suppressed by doping of smaller RE3+ ions such as Yb3+ and Lu3+. All the samples exhibit an intense second harmonic generation signal under tunable IR pumping laser source, due to both the high values of the non-linear optical coefficients and the absence of absorption of additional RE ions in the visible range.

Original languageEnglish
Pages (from-to)148-156
Number of pages9
JournalJournal of Crystal Growth
Volume247
Issue number1-2
DOIs
Publication statusPublished - 2003 Jan

Keywords

  • A1. Micro-twin
  • A1. Rare-earth doping
  • A1. Second harmonic generation
  • A2. Growth from melt
  • B1. Barium sodium niobate

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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