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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10.1016/j.jnoncrysol.2004.08.054

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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",

note = "Funding Information: This work was supported by the 21st Century of Center of Excellence (COE) Program in Nagaoka University of Technology. The authors are grateful to Professor T. Yoko and Dr M. Takahashi, Kyoto University, for use of prism coupler technique.; Physics of Non-Crystalline Solids 10 ; Conference date: 15-10-2004 Through 15-10-2004",

year = "2004",

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

language = "English",

volume = "345-346",

pages = "412--416",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

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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.

N1 - Funding Information: This work was supported by the 21st Century of Center of Excellence (COE) Program in Nagaoka University of Technology. The authors are grateful to Professor T. Yoko and Dr M. Takahashi, Kyoto University, for use of prism coupler technique.

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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DO - 10.1016/j.jnoncrysol.2004.08.054

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VL - 345-346

SP - 412

EP - 416

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

T2 - Physics of Non-Crystalline Solids 10

Y2 - 15 October 2004 through 15 October 2004

ER -

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

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