کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1331018 978988 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preferential growth orientation of laser-patterned LiNbO3 crystals in lithium niobium silicate glass
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Preferential growth orientation of laser-patterned LiNbO3 crystals in lithium niobium silicate glass
چکیده انگلیسی

Dots and lines consisting of LiNbO3 crystals are patterned on the surface of 1CuO–40Li2O–32Nb2O5–28SiO2 (mole ratio) glass by irradiations of continuous-wave Nd:YAG laser (wavelength: λ=1064 nm), diode laser (λ=795 nm), and Yb:YVO4 fiber laser (λ=1080 nm), and the feature of laser-patterned LiNbO3 crystal growth is examined from linearly polarized micro-Raman scattering spectrum measurements. LiNbO3 crystals with the c-axis orientation are formed at the edge parts of the surface and cross-section of dots. The growth direction of an LiNbO3 along the laser scanning direction is the c-axis. It is proposed that the profile of the temperature distribution in the laser-irradiated region and its change along laser scanning would be one of the most important conditions for the patterning of crystals with a preferential growth orientation. Laser irradiation giving a narrow width is also proposed to be one of the important factors for the patterning of LiNbO3 crystal lines with homogeneous surface morphologies.

Polarized optical microscope observations for the surface and cross-section of the dot obtained by LD laser (λ=795 nm) irradiations of P=1.4 W and t=20 s in Cu–LNS glass. Schematic model for the orientation of LiNbO3 crystals at the edge parts of the surface and cross-section of the dot is also shown.Figure optionsDownload as PowerPoint slideResearch highlights
► Dots and lines with LiNbO3 crystals are patterned on the glass surface by laser irradiations.
► LiNbO3 crystals with the c-axis orientation are formed at the edge parts of the surface and cross-section of dots.
► The profile of the temperature distribution in the laser-irradiated region is one of the most important conditions for the patterning of highly oriented crystals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 184, Issue 2, February 2011, Pages 411–418
نویسندگان
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