Second harmonic generation in germanotellurite bulk glass‐ceramics. Issue 4 (14th February 2017)

• Record Type: Journal Article
• Authors: Truong, Lo Nhat; Dussauze, Marc; Allix, Mathieu; Chenu, Sébastien; Cardinal, Thierry; Fargin, Evelyne; Santos, Luís F.
• Is Part Of: Journal of the American Ceramic Society. Volume 100:Issue 4(2017)
• Page Start: 1412
• Page End: 1423
• Publication Date: 2017-02-14
• Subjects: germanotellurite -- glass‐ceramics -- second harmonic generation; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.14745
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: In this study, we have investigated the use of silver cation as nucleating agent in germanotellurite glass matrix of compositions (100− x ) [70TeO2 –10GeO2 –10Nb2 O5 –10K2 O]– x Ag2 O ( x =0‐6 mol%), in order to promote bulk crystallization. Density measurements, differential scanning calorimetry, X‐ray diffraction, UV‐Vis, and Raman spectroscopies have been performed to study the crystallization process. We have observed bulk crystallization of a unique noncentrosymmetric phase, K[Nb1/3 Te2/3 ]2 O4.8, which has been investigated for its second‐order optical activity. Transparent to translucent glass‐ceramics have been successfully tailored under thermal treatment and second harmonic generation signals were recorded on the glass‐ceramic samples as a function of their synthesis procedure. It is suggested that the second‐order optical properties observed are strongly related to the organization of crystallites within phase‐separated domains.