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

6 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)

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Fabrication of Ba₂TiGe₂O₈ thin film with optical nonlinearity. / Ogawa, Ryoh; Masai, Hirokazu; Takahashi, Yoshihiro; Mori, Hiroshi; Fujiwara, Takumi; Komatsu, Takayuki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 10 B, 22.10.2007, p. 7145-7147.

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

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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.",

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AU - Komatsu, Takayuki

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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.

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