Second-Harmonic Generation of Electrically Poled Borophosphate Glasses: Effects of Introducing Niobium or Sodium Oxides
✍ Scribed by V. Nazabal; E. Fargin; J.J. Videau; G. Le Flem; A. Le Calvez; S. Montant; E. Freysz; A. Ducasse; M. Couzi
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 305 KB
- Volume
- 133
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
Second-harmonic generation in poled glasses opens new frontiers in optical material research. Within this context new borophosphate glasses of the Ca(PO 3 ) 2 -CaB 4 O 7 -Na 2 B 4 O 7 -Nb 2 O 5 system were synthesized and their second-harmonic generation was evaluated after poling treatment. The enhancement of the second-harmonic signal with niobium oxide content is related to the presence of distorted NbO 6 octahedra in the former of the glasses and to the increase in third-order susceptibility. The intensity of the measured second-harmonic signal is not dependent on the amount of sodium (100 -1000 ppm) introduced into the glass.