Synthesis of Sm3+-doped strontium barium niobate crystals in glass by samarium atom heat processing
✍ Scribed by Nakorn Chayapiwut; Tsuyoshi Honma; Yasuhiko Benino; Takumi Fujiwara; Takayuki Komatsu
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 449 KB
- Volume
- 178
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
New glasses giving the crystallization of Sm 3+ -doped Sr x Ba 1Àx Nb 2 O 6 (SBN) ferroelectrics have been developed in the Sm 2 O 3 ÀSrOÀBaOÀNb 2 O 5 ÀB 2 O 3 system, and the formation of SBN crystal dots and lines by continuous wave Nd:YAG laser (wavelength:1064 nm, power: 1 W) irradiations, i.e., samarium atom heat processing, has been examined. The formation of Sm 3+ -doped SBN non-linear optical crystals is confirmed from X-ray diffraction analyses, micro-Raman scattering spectra, second harmonic generations, and photoluminescence spectra. Sm 3+ -doped SBN crystal dots with the diameters of 20-70 mm and lines with the widths of 20-40 mm are written at the surface of some glasses such as 10Sm 2 O 3 Á 10SrO Á 10BaO Á 20Nb 2 O 5 Á 50B 2 O 3 (mol%) by Nd:YAG laser irradiations with the irradiation times of 20-70 s for the dots and with the scanning speeds of 1-5 mm/s for the lines. The present study suggests that the samarium atom heat processing has a potential for the patterning of optical waveguides consisting of ferroelectric SBN crystals in glass substrates.