Formation of Ba2TiGe2O8 phase in BaO-TiO2-GeO2 glasses and their optical non-linearities

Y. Takahashi; K. Saitoh; Y. Benino; T. Fujiwara; T. Komatsu

doi:10.1016/j.jnoncrysol.2004.08.054

Formation of Ba₂TiGe₂O₈ phase in BaO-TiO₂-GeO₂ glasses and their optical non-linearities

Y. Takahashi, K. Saitoh, Y. Benino, T. Fujiwara, T. Komatsu

Research output: Contribution to journal › Conference article › peer-review

21 Citations (Scopus)

Abstract

Second-order optical non-linearities for the transparent Ba ₂TiGe₂O₈ (BTG) crystallized glasses with the composition of 40BaO · 20TiO₂ · 40GeO₂ (BTG40), 33.3BaO · 16.7TiO₂ · 50GeO₂ (BTG50) and 30BaO · 15TiO₂ · 55GeO₂ (BTG55) have been examined. A very large d₃₃ value for a transparent BTG crystallized glass in BTG55 was achieved, i.e., d₃₃ = 22 ± 3 pm/V, being comparable to that of LiNbO₃ single crystal. The d ₃₃ for BTG50 and BTG40 were measured to be 12 ± 3 pm/V and 7 ± 2 pm/V, respectively. This result indicates that d₃₃ decreases with GeO₂ concentration, when approaching the glass composition of the stoichiometric BTG crystal. For a larger d₃₃ value in BTG crystallized glasses, it is considered that the high homogeneity of the oriented surface Ba₂TiGe₂O₈ crystalline layer on the crystallized BTG55 glass is accomplished by a suitable amount of benitoite phase of BaTiGe₃O₉, which acts a nucleation site for the BTG crystal.

Original language	English
Pages (from-to)	412-416
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	345-346
DOIs	https://doi.org/10.1016/j.jnoncrysol.2004.08.054
Publication status	Published - 2004 Oct 15
Externally published	Yes
Event	Physics of Non-Crystalline Solids 10 - Parma, Italy Duration: 2004 Oct 15 → 2004 Oct 15

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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@article{f1a397a17dd44961a61859d8370ea9ac,

title = "Formation of Ba2TiGe2O8 phase in BaO-TiO2-GeO2 glasses and their optical non-linearities",

abstract = "Second-order optical non-linearities for the transparent Ba 2TiGe2O8 (BTG) crystallized glasses with the composition of 40BaO · 20TiO2 · 40GeO2 (BTG40), 33.3BaO · 16.7TiO2 · 50GeO2 (BTG50) and 30BaO · 15TiO2 · 55GeO2 (BTG55) have been examined. A very large d33 value for a transparent BTG crystallized glass in BTG55 was achieved, i.e., d33 = 22 ± 3 pm/V, being comparable to that of LiNbO3 single crystal. The d 33 for BTG50 and BTG40 were measured to be 12 ± 3 pm/V and 7 ± 2 pm/V, respectively. This result indicates that d33 decreases with GeO2 concentration, when approaching the glass composition of the stoichiometric BTG crystal. For a larger d33 value in BTG crystallized glasses, it is considered that the high homogeneity of the oriented surface Ba2TiGe2O8 crystalline layer on the crystallized BTG55 glass is accomplished by a suitable amount of benitoite phase of BaTiGe3O9, which acts a nucleation site for the BTG crystal.",

author = "Y. Takahashi and K. Saitoh and Y. Benino and T. Fujiwara and T. Komatsu",

year = "2004",

month = oct,

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doi = "10.1016/j.jnoncrysol.2004.08.054",

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pages = "412--416",

journal = "Journal of Non-Crystalline Solids",

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note = "Physics of Non-Crystalline Solids 10 ; Conference date: 15-10-2004 Through 15-10-2004",

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TY - JOUR

T1 - Formation of Ba2TiGe2O8 phase in BaO-TiO2-GeO2 glasses and their optical non-linearities

AU - Takahashi, Y.

AU - Saitoh, K.

AU - Benino, Y.

AU - Fujiwara, T.

AU - Komatsu, T.

PY - 2004/10/15

Y1 - 2004/10/15

N2 - Second-order optical non-linearities for the transparent Ba 2TiGe2O8 (BTG) crystallized glasses with the composition of 40BaO · 20TiO2 · 40GeO2 (BTG40), 33.3BaO · 16.7TiO2 · 50GeO2 (BTG50) and 30BaO · 15TiO2 · 55GeO2 (BTG55) have been examined. A very large d33 value for a transparent BTG crystallized glass in BTG55 was achieved, i.e., d33 = 22 ± 3 pm/V, being comparable to that of LiNbO3 single crystal. The d 33 for BTG50 and BTG40 were measured to be 12 ± 3 pm/V and 7 ± 2 pm/V, respectively. This result indicates that d33 decreases with GeO2 concentration, when approaching the glass composition of the stoichiometric BTG crystal. For a larger d33 value in BTG crystallized glasses, it is considered that the high homogeneity of the oriented surface Ba2TiGe2O8 crystalline layer on the crystallized BTG55 glass is accomplished by a suitable amount of benitoite phase of BaTiGe3O9, which acts a nucleation site for the BTG crystal.

AB - Second-order optical non-linearities for the transparent Ba 2TiGe2O8 (BTG) crystallized glasses with the composition of 40BaO · 20TiO2 · 40GeO2 (BTG40), 33.3BaO · 16.7TiO2 · 50GeO2 (BTG50) and 30BaO · 15TiO2 · 55GeO2 (BTG55) have been examined. A very large d33 value for a transparent BTG crystallized glass in BTG55 was achieved, i.e., d33 = 22 ± 3 pm/V, being comparable to that of LiNbO3 single crystal. The d 33 for BTG50 and BTG40 were measured to be 12 ± 3 pm/V and 7 ± 2 pm/V, respectively. This result indicates that d33 decreases with GeO2 concentration, when approaching the glass composition of the stoichiometric BTG crystal. For a larger d33 value in BTG crystallized glasses, it is considered that the high homogeneity of the oriented surface Ba2TiGe2O8 crystalline layer on the crystallized BTG55 glass is accomplished by a suitable amount of benitoite phase of BaTiGe3O9, which acts a nucleation site for the BTG crystal.

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