Fabrication of Ba2TiGe2O8 thin film with optical nonlinearity

Ryoh Ogawa; Hirokazu Masai; Yoshihiro Takahashi; Hiroshi Mori; Takumi Fujiwara; Takayuki Komatsu

doi:10.1143/JJAP.46.7145

Fabrication of Ba₂TiGe₂O₈ thin film with optical nonlinearity

Ryoh Ogawa, Hirokazu Masai, Yoshihiro Takahashi, Hiroshi Mori, Takumi Fujiwara, Takayuki Komatsu

ENG - Applied Physics

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

7 Citations (Scopus)

Abstract

We have successfully fabricated a glass thin film in the BaO-TiO ₂-GeO₂ system and a fresnoite-type Ba₂TiGe ₂O₈ (BTG) crystalline thin film with second-order optical nonlinearity for the first time. An as-deposited glass thin film showing good transparency and homogeneity could be formed on a fused silica substrate by RF sputtering with a 30BaO-15TiO₂-55GeO₂ glass target. Subsequently, a transparent BTG-crystallized thin film could be obtained using proper heat-treatment conditions. Furthermore, a clear second-harmonic generation has been observed by the Maker fringe technique in the transparent BTG-crystallized thin films obtained by heat treatment at 730-750°C for 3h.

Original language	English
Pages (from-to)	7145-7147
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	46
Issue number	10 B
DOIs	https://doi.org/10.1143/JJAP.46.7145
Publication status	Published - 2007 Oct 22

Keywords

Crystallization
Fresnoit-type phase
Glass
Second-order optical nonlinearlty
Thin film

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.46.7145

Cite this

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title = "Fabrication of Ba2TiGe2O8 thin film with optical nonlinearity",

abstract = "We have successfully fabricated a glass thin film in the BaO-TiO 2-GeO2 system and a fresnoite-type Ba2TiGe 2O8 (BTG) crystalline thin film with second-order optical nonlinearity for the first time. An as-deposited glass thin film showing good transparency and homogeneity could be formed on a fused silica substrate by RF sputtering with a 30BaO-15TiO2-55GeO2 glass target. Subsequently, a transparent BTG-crystallized thin film could be obtained using proper heat-treatment conditions. Furthermore, a clear second-harmonic generation has been observed by the Maker fringe technique in the transparent BTG-crystallized thin films obtained by heat treatment at 730-750°C for 3h.",

keywords = "Crystallization, Fresnoit-type phase, Glass, Second-order optical nonlinearlty, Thin film",

author = "Ryoh Ogawa and Hirokazu Masai and Yoshihiro Takahashi and Hiroshi Mori and Takumi Fujiwara and Takayuki Komatsu",

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T1 - Fabrication of Ba2TiGe2O8 thin film with optical nonlinearity

AU - Ogawa, Ryoh

AU - Masai, Hirokazu

AU - Takahashi, Yoshihiro

AU - Mori, Hiroshi

AU - Fujiwara, Takumi

AU - Komatsu, Takayuki

PY - 2007/10/22

Y1 - 2007/10/22

N2 - We have successfully fabricated a glass thin film in the BaO-TiO 2-GeO2 system and a fresnoite-type Ba2TiGe 2O8 (BTG) crystalline thin film with second-order optical nonlinearity for the first time. An as-deposited glass thin film showing good transparency and homogeneity could be formed on a fused silica substrate by RF sputtering with a 30BaO-15TiO2-55GeO2 glass target. Subsequently, a transparent BTG-crystallized thin film could be obtained using proper heat-treatment conditions. Furthermore, a clear second-harmonic generation has been observed by the Maker fringe technique in the transparent BTG-crystallized thin films obtained by heat treatment at 730-750°C for 3h.

AB - We have successfully fabricated a glass thin film in the BaO-TiO 2-GeO2 system and a fresnoite-type Ba2TiGe 2O8 (BTG) crystalline thin film with second-order optical nonlinearity for the first time. An as-deposited glass thin film showing good transparency and homogeneity could be formed on a fused silica substrate by RF sputtering with a 30BaO-15TiO2-55GeO2 glass target. Subsequently, a transparent BTG-crystallized thin film could be obtained using proper heat-treatment conditions. Furthermore, a clear second-harmonic generation has been observed by the Maker fringe technique in the transparent BTG-crystallized thin films obtained by heat treatment at 730-750°C for 3h.

KW - Crystallization

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KW - Second-order optical nonlinearlty

KW - Thin film

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