Formation of langasite-type crystals in corresponding glasses and their second-order optical nonlinearities

Yoshihiro Takahashi, Kenta Saitoh, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Second-order optical nonlinearities for the langasite-type phases obtained by crystallization of corresponding glasses are clarified for the first time. It is confirmed that most of langasite-type crystalline phases can be formed by crystallization in the corresponding glasses without introducting of any impurity phases, e.g., the glasses with the stoichiometric composition of Ba3Ga2Ge4O14, BaGa4La2Ge2O14, Pb3Ga2Ge4O14, etc. We find that Pb3Ga2Ge4O14 and Pb3AlGaGe4O14 phases exhibited strong second-harmonic intensities of approximately 100 times as large as α-quartz by means of a powder technique, demonstrating that those langasite-type crystals are excellent nonlinear optical materials. It is also suggested that the octahedral site is one of keys for second-order optical nonlinearity in langasite-type crystals.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume112
Issue number1301
Publication statusPublished - Jan 2004
Externally publishedYes

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nonlinearity
Glass
Crystals
glass
Crystallization
crystallization
crystals
Optical materials
optical materials
Quartz
quartz
Powders
Impurities
Crystalline materials
harmonics
impurities
Chemical analysis
La3Ga5SiO14

Keywords

  • Crystallization
  • Glass
  • Langasite-type crystal
  • Second-order optical nonlinearity

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Formation of langasite-type crystals in corresponding glasses and their second-order optical nonlinearities. / Takahashi, Yoshihiro; Saitoh, Kenta; Benino, Yasuhiko; Fujiwara, Takumi; Komatsu, Takayuki.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 112, No. 1301, 01.2004, p. 61-64.

Research output: Contribution to journalArticle

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AU - Komatsu, Takayuki

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AB - Second-order optical nonlinearities for the langasite-type phases obtained by crystallization of corresponding glasses are clarified for the first time. It is confirmed that most of langasite-type crystalline phases can be formed by crystallization in the corresponding glasses without introducting of any impurity phases, e.g., the glasses with the stoichiometric composition of Ba3Ga2Ge4O14, BaGa4La2Ge2O14, Pb3Ga2Ge4O14, etc. We find that Pb3Ga2Ge4O14 and Pb3AlGaGe4O14 phases exhibited strong second-harmonic intensities of approximately 100 times as large as α-quartz by means of a powder technique, demonstrating that those langasite-type crystals are excellent nonlinear optical materials. It is also suggested that the octahedral site is one of keys for second-order optical nonlinearity in langasite-type crystals.

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