Large second-order optical nonlinearity in 30BaO-15TiO2- 55GeO2 surface crystallized glass with strong orientation

Hirokazu Masai, Takumi Fujiwara, Yasuhiko Benino, Takayuki Komatsu

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


The correlation between the orientation degree of surface crystalline phase and the second-order optical susceptibility, d coefficient for second-harmonic generation, in 30BaO-15TiO2-55GeO2 (BTG55) crystallized glass was investigated using x-ray diffraction measurements and a Maker fringe technique. The d coefficient in BTG55 crystallized glass was confirmed to depend on the orientation degree of the surface crystalline phase. An oriented fresnoite (Ba2TiGe2O8) phase was observed in transparent BTG55 crystallized glass which had been heat treated at 720 °C for 3 h. The orientation degree along the polar c axis in the fresnoite phase increased with increasing removal thickness by polishing from the surface up to several microns. A d coefficient in transparent BTG55 crystallized glass of 24±3 pm/V has been obtained, which is the largest value in crystallized glass ever reported.

Original languageEnglish
Article number023526
JournalJournal of Applied Physics
Issue number2
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Large second-order optical nonlinearity in 30BaO-15TiO<sub>2</sub>- 55GeO<sub>2</sub> surface crystallized glass with strong orientation'. Together they form a unique fingerprint.

Cite this