Crystal growth and characterization of titanium-doped near-stoichiometric LiNbO3

Masaru Nakamura; Shunji Takekawa; Sunao Kurimura; Kenji Kitamura; Hirochika Nakajima

doi:10.1016/j.jcrysgro.2004.01.013

Crystal growth and characterization of titanium-doped near-stoichiometric LiNbO₃

Masaru Nakamura^*, Shunji Takekawa, Sunao Kurimura, Kenji Kitamura, Hirochika Nakajima

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Titanium-doped near-stoichiometric LiNbO₃ (SLN) crystals were grown from lithium-rich solutions with a Ti concentration of up to approximately 20mol% by a top-seeded solution-growth (TSSG) method. Ti-doped SLN (Ti:SLN) crystals with a Ti concentration of up to 9mol% were free from inclusions, voids, cracks, or mechanical twins. The effective distribution coefficient k_eff for Ti in the Ti:SLN crystals was found to be approximately 0.45±0.05 for the Nb atom in the above composition range. The Ti-doping effects on Curie temperature, UV absorption edge, changes in the ordinary and extraordinary refractive indexes (Δn_o and Δn_e), and lattice constants were investigated. The Curie temperature for the Ti:SLN crystals linearly decreased with increasing Ti concentration up to 9mol%. Both Δn_o and Δn_e linearly increased with increasing Ti concentration up to 9mol%, and Δn_e was much larger than Δn_o over the entire wavelength range from 440 to 1550nm. The UV absorption edge for the Ti:SLN crystals shifted to longer wavelengths with increasing Ti concentration. The a- and c-axes lattice constants in the Ti:SLN crystals decreased with increasing Ti concentration. In addition, a photoelastic effect on the refractive-index changes in the Ti:SLN crystal was estimated from the lattice-constant data.

Original language	English
Pages (from-to)	339-345
Number of pages	7
Journal	Journal of Crystal Growth
Volume	264
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jcrysgro.2004.01.013
Publication status	Published - 2004 Mar 15

Keywords

A1. Characterization
A2. Growth from solutions
A2. Top seeded solution growth
B1. Oxides
B2. Ferro-electric materials
B2. Nonlinear optical materials
B3. Nonlinear optical

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1016/j.jcrysgro.2004.01.013

Cite this

@article{de45afbf9d8046eaa3efd0b16936beb2,

title = "Crystal growth and characterization of titanium-doped near-stoichiometric LiNbO3 ",

abstract = "Titanium-doped near-stoichiometric LiNbO3 (SLN) crystals were grown from lithium-rich solutions with a Ti concentration of up to approximately 20mol% by a top-seeded solution-growth (TSSG) method. Ti-doped SLN (Ti:SLN) crystals with a Ti concentration of up to 9mol% were free from inclusions, voids, cracks, or mechanical twins. The effective distribution coefficient keff for Ti in the Ti:SLN crystals was found to be approximately 0.45±0.05 for the Nb atom in the above composition range. The Ti-doping effects on Curie temperature, UV absorption edge, changes in the ordinary and extraordinary refractive indexes (Δno and Δne), and lattice constants were investigated. The Curie temperature for the Ti:SLN crystals linearly decreased with increasing Ti concentration up to 9mol%. Both Δno and Δne linearly increased with increasing Ti concentration up to 9mol%, and Δne was much larger than Δno over the entire wavelength range from 440 to 1550nm. The UV absorption edge for the Ti:SLN crystals shifted to longer wavelengths with increasing Ti concentration. The a- and c-axes lattice constants in the Ti:SLN crystals decreased with increasing Ti concentration. In addition, a photoelastic effect on the refractive-index changes in the Ti:SLN crystal was estimated from the lattice-constant data.",

keywords = "A1. Characterization, A2. Growth from solutions, A2. Top seeded solution growth, B1. Oxides, B2. Ferro-electric materials, B2. Nonlinear optical materials, B3. Nonlinear optical",

author = "Masaru Nakamura and Shunji Takekawa and Sunao Kurimura and Kenji Kitamura and Hirochika Nakajima",

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T1 - Crystal growth and characterization of titanium-doped near-stoichiometric LiNbO3

AU - Nakamura, Masaru

AU - Takekawa, Shunji

AU - Kurimura, Sunao

AU - Kitamura, Kenji

AU - Nakajima, Hirochika

PY - 2004/3/15

Y1 - 2004/3/15

N2 - Titanium-doped near-stoichiometric LiNbO3 (SLN) crystals were grown from lithium-rich solutions with a Ti concentration of up to approximately 20mol% by a top-seeded solution-growth (TSSG) method. Ti-doped SLN (Ti:SLN) crystals with a Ti concentration of up to 9mol% were free from inclusions, voids, cracks, or mechanical twins. The effective distribution coefficient keff for Ti in the Ti:SLN crystals was found to be approximately 0.45±0.05 for the Nb atom in the above composition range. The Ti-doping effects on Curie temperature, UV absorption edge, changes in the ordinary and extraordinary refractive indexes (Δno and Δne), and lattice constants were investigated. The Curie temperature for the Ti:SLN crystals linearly decreased with increasing Ti concentration up to 9mol%. Both Δno and Δne linearly increased with increasing Ti concentration up to 9mol%, and Δne was much larger than Δno over the entire wavelength range from 440 to 1550nm. The UV absorption edge for the Ti:SLN crystals shifted to longer wavelengths with increasing Ti concentration. The a- and c-axes lattice constants in the Ti:SLN crystals decreased with increasing Ti concentration. In addition, a photoelastic effect on the refractive-index changes in the Ti:SLN crystal was estimated from the lattice-constant data.

AB - Titanium-doped near-stoichiometric LiNbO3 (SLN) crystals were grown from lithium-rich solutions with a Ti concentration of up to approximately 20mol% by a top-seeded solution-growth (TSSG) method. Ti-doped SLN (Ti:SLN) crystals with a Ti concentration of up to 9mol% were free from inclusions, voids, cracks, or mechanical twins. The effective distribution coefficient keff for Ti in the Ti:SLN crystals was found to be approximately 0.45±0.05 for the Nb atom in the above composition range. The Ti-doping effects on Curie temperature, UV absorption edge, changes in the ordinary and extraordinary refractive indexes (Δno and Δne), and lattice constants were investigated. The Curie temperature for the Ti:SLN crystals linearly decreased with increasing Ti concentration up to 9mol%. Both Δno and Δne linearly increased with increasing Ti concentration up to 9mol%, and Δne was much larger than Δno over the entire wavelength range from 440 to 1550nm. The UV absorption edge for the Ti:SLN crystals shifted to longer wavelengths with increasing Ti concentration. The a- and c-axes lattice constants in the Ti:SLN crystals decreased with increasing Ti concentration. In addition, a photoelastic effect on the refractive-index changes in the Ti:SLN crystal was estimated from the lattice-constant data.

KW - A1. Characterization

KW - A2. Growth from solutions

KW - A2. Top seeded solution growth

KW - B1. Oxides

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KW - B2. Nonlinear optical materials

KW - B3. Nonlinear optical

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