Preferential growth orientation of laser-patterned LiNbO{sub 3} crystals in lithium niobium silicate glass

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.12.016· OSTI ID:21504048

Komatsu, T ^[1]; Koshiba, K; Honma, T ^[1]

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1. Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan)

Dots and lines consisting of LiNbO{sub 3} crystals are patterned on the surface of 1CuO-40Li{sub 2}O-32Nb{sub 2}O{sub 5}-28SiO{sub 2} (mole ratio) glass by irradiations of continuous-wave Nd:YAG laser (wavelength: {lambda}=1064 nm), diode laser ({lambda}=795 nm), and Yb:YVO{sub 4} fiber laser ({lambda}=1080 nm), and the feature of laser-patterned LiNbO{sub 3} crystal growth is examined from linearly polarized micro-Raman scattering spectrum measurements. LiNbO{sub 3} 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 LiNbO{sub 3} 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 LiNbO{sub 3} crystal lines with homogeneous surface morphologies. -- Graphical abstract: Polarized optical microscope observations for the surface and cross-section of the dot obtained by LD laser ({lambda}=795 nm) irradiations of P=1.4 W and t=20 s in Cu-LNS glass. Schematic model for the orientation of LiNbO{sub 3} crystals at the edge parts of the surface and cross-section of the dot is also shown. Display Omitted Research highlights: > Dots and lines with LiNbO{sub 3} crystals are patterned on the glass surface by laser irradiations. > LiNbO{sub 3} 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.

• OSTI ID: 21504048
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 2; Other Information: DOI: 10.1016/j.jssc.2010.12.016; PII: S0022-4596(10)00562-1; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CROSS SECTIONS
CRYSTAL GROWTH
GLASS
IRRADIATION
LASER RADIATION
LITHIUM COMPOUNDS
MORPHOLOGY
NEODYMIUM LASERS
NIOBATES
NIOBIUM OXIDES
NIOBIUM SILICATES
OPTICAL MICROSCOPES
RAMAN EFFECT
RAMAN SPECTRA
SURFACES
TEMPERATURE DISTRIBUTION
VANADATES
ALKALI METAL COMPOUNDS
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
LASERS
MICROSCOPES
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
REFRACTORY METAL COMPOUNDS
SILICATES
SILICON COMPOUNDS
SOLID STATE LASERS
SPECTRA
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS