Crystallization of langasite-type phases in gallium germanate glasses and optical properties of crystallized glasses

S. Kosaka; Y. Takahashi; Y. Benino; T. Fujiwara; T. Komatsu

doi:10.1016/j.optmat.2005.05.018

Crystallization of langasite-type phases in gallium germanate glasses and optical properties of crystallized glasses

S. Kosaka, Y. Takahashi, Y. Benino, T. Fujiwara, T. Komatsu

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Langasite-type crystals such as Ba₃Ga₂Ge₄O₁₄ and BaGa₄La₂Ge₂O₁₄ are formed through the crystallization of gallium germanate glasses with stoichiometric compositions corresponding to langasite-type phases and optical properties of crystallized glasses are clarified. It is found that the single langasite-type phase is easily formed in each corresponding glass. The crystallized glasses with highly oriented langasite-type crystals at the surface are fabricated using an ultrasonic surface treatment method. The crystallized glasses with Ba_xGa_5-xLa_3-xGe_1+xO₁₄ phases show moderate second harmonic (SH) intensities of 5-75 times as large as α-quartz, and it is found that the SH intensity of Ba_xGa_5-xLa_3-xGe_1+xO₁₄ phases increases with the increase of the La³⁺/Ba²⁺ ratio. The feature of fluorescence spectra of Eu³⁺ ions incorporated into langasite-type crystals is also discussed.

Original language	English
Pages (from-to)	1129-1135
Number of pages	7
Journal	Optical Materials
Volume	28
Issue number	10
DOIs	https://doi.org/10.1016/j.optmat.2005.05.018
Publication status	Published - Jul 2006
Externally published	Yes

Keywords

Crystallized glass
Gallium germanate glass
Langasite-type crystals
Second harmonic generation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Computer Science(all)
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2005.05.018

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@article{d6569c59f1ee420c942e040d7b9d6d3f,

title = "Crystallization of langasite-type phases in gallium germanate glasses and optical properties of crystallized glasses",

abstract = "Langasite-type crystals such as Ba3Ga2Ge4O14 and BaGa4La2Ge2O14 are formed through the crystallization of gallium germanate glasses with stoichiometric compositions corresponding to langasite-type phases and optical properties of crystallized glasses are clarified. It is found that the single langasite-type phase is easily formed in each corresponding glass. The crystallized glasses with highly oriented langasite-type crystals at the surface are fabricated using an ultrasonic surface treatment method. The crystallized glasses with BaxGa5-xLa3-xGe1+xO14 phases show moderate second harmonic (SH) intensities of 5-75 times as large as α-quartz, and it is found that the SH intensity of BaxGa5-xLa3-xGe1+xO14 phases increases with the increase of the La3+/Ba2+ ratio. The feature of fluorescence spectra of Eu3+ ions incorporated into langasite-type crystals is also discussed.",

keywords = "Crystallized glass, Gallium germanate glass, Langasite-type crystals, Second harmonic generation",

author = "S. Kosaka and Y. Takahashi and Y. Benino and T. Fujiwara and T. Komatsu",

note = "Funding Information: This work was supported from the SCOPE (Strategic Information and Communications R&D Promotion Program) project by the ministry of Public Management, Home Affairs, Posts and Telecommunications, Japan, from the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sport, and Culture, Japan, and by the 21st Century Center of Excellence (COE) Program in Nagaoka University of Technology.",

year = "2006",

month = jul,

doi = "10.1016/j.optmat.2005.05.018",

language = "English",

volume = "28",

pages = "1129--1135",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier",

number = "10",

}

TY - JOUR

T1 - Crystallization of langasite-type phases in gallium germanate glasses and optical properties of crystallized glasses

AU - Kosaka, S.

AU - Takahashi, Y.

AU - Benino, Y.

AU - Fujiwara, T.

AU - Komatsu, T.

N1 - Funding Information: This work was supported from the SCOPE (Strategic Information and Communications R&D Promotion Program) project by the ministry of Public Management, Home Affairs, Posts and Telecommunications, Japan, from the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sport, and Culture, Japan, and by the 21st Century Center of Excellence (COE) Program in Nagaoka University of Technology.

PY - 2006/7

Y1 - 2006/7

N2 - Langasite-type crystals such as Ba3Ga2Ge4O14 and BaGa4La2Ge2O14 are formed through the crystallization of gallium germanate glasses with stoichiometric compositions corresponding to langasite-type phases and optical properties of crystallized glasses are clarified. It is found that the single langasite-type phase is easily formed in each corresponding glass. The crystallized glasses with highly oriented langasite-type crystals at the surface are fabricated using an ultrasonic surface treatment method. The crystallized glasses with BaxGa5-xLa3-xGe1+xO14 phases show moderate second harmonic (SH) intensities of 5-75 times as large as α-quartz, and it is found that the SH intensity of BaxGa5-xLa3-xGe1+xO14 phases increases with the increase of the La3+/Ba2+ ratio. The feature of fluorescence spectra of Eu3+ ions incorporated into langasite-type crystals is also discussed.

AB - Langasite-type crystals such as Ba3Ga2Ge4O14 and BaGa4La2Ge2O14 are formed through the crystallization of gallium germanate glasses with stoichiometric compositions corresponding to langasite-type phases and optical properties of crystallized glasses are clarified. It is found that the single langasite-type phase is easily formed in each corresponding glass. The crystallized glasses with highly oriented langasite-type crystals at the surface are fabricated using an ultrasonic surface treatment method. The crystallized glasses with BaxGa5-xLa3-xGe1+xO14 phases show moderate second harmonic (SH) intensities of 5-75 times as large as α-quartz, and it is found that the SH intensity of BaxGa5-xLa3-xGe1+xO14 phases increases with the increase of the La3+/Ba2+ ratio. The feature of fluorescence spectra of Eu3+ ions incorporated into langasite-type crystals is also discussed.

KW - Crystallized glass

KW - Gallium germanate glass

KW - Langasite-type crystals

KW - Second harmonic generation

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U2 - 10.1016/j.optmat.2005.05.018

DO - 10.1016/j.optmat.2005.05.018

M3 - Article

AN - SCOPUS:33646834893

VL - 28

SP - 1129

EP - 1135

JO - Optical Materials

JF - Optical Materials

SN - 0925-3467

IS - 10

ER -

Crystallization of langasite-type phases in gallium germanate glasses and optical properties of crystallized glasses

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Keywords

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