Fabrication of transparent tellurite-based glass-ceramics with graded optical nonlinearity

Takayuki Komatsu, Yasuhiko Benino, Ryosuke Sakai

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7 Citations (Scopus)


Transparent TeO2-based glass-ceramics with graded optical nonlinearity such as second harmonic generation (SHG) have been fabricated for the first time through the two-step heat-treatment of 15K2O-15Nb2O5-70TeO2/ 7.5Li2O-7.5Na2O-15Nb2O5-70TeO 2 joined glass sample. The gradual distribution of the species of alkali metal ions at the interface is confirmed from X-ray diffraction analyses. This result indicates the gradation of the second harmonic intensity at the interface, because the perfect solid solution between Na+ and K+ occurrs in the crystalline phase showing SHG and the intensity of second harmonicity decreases with increasing Na2O/K2O ratio. The fabrication of the transparent glass-ceramics having the gradient of the degree of the crystallization of the phase showing SHG has been also tried using the joined glass of 15K2O-15Nb2O5-70TeO2 (sample A) and 15K2O-15W2O6-70TeO2 (sample B). Sample B is very stable thermally against crystallization. The crack is observed at the interface of such glass-ceramics because a large difference in the thermal expansion coefficient between the crystallized sample A showing SHG and the sample B maintaining the glassy state. The transparent Er3+ and Eu3+-doped glass-ceramics have been successfully prepared, and it is found that the intensity of the frequency upconversion fluorescence at around 550 nm due to the 4S3/24I15/2 transition of Er3+ in the glass-ceramics is strong compared with that in their precursor glass. This gives a new possibility for the fabrication of optically functionally graded TeO2-based glass-ceramics.

Original languageEnglish
Pages (from-to)1055-1062
Number of pages8
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number11
Publication statusPublished - 1998
Externally publishedYes


  • Low phonon energy
  • Optically graded glass-ceramics
  • Second harmonic generation
  • Tellurite-based glasses

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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