Behavior of domain-structure due to heat-treatment in ferroelectric material

铁电材料热处理引起的磁畴结构行为

• 批准号: 20560041
• 负责人: NAKAMURA Masaru
• 金额: $ 3万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560041/
• 关键词: 強誘電体; ドメイン構造; 熱伝導率; LiTaO_3; 周期ドメイン; 波長変換; 擬似位相整合; 物性実験; 結晶工学

A recently developed 20-W continuous-wave (CW) green (532-nm) laser was achieved by using quasi-phase matching (QPM) to convert the frequency. An Mg (1mol%)-doped near-stoichiometric LiTaO_3 (MgSLT) crystal is used in this laser system. These high-power CW green lasers are well suited for laser projection and laser processing.A domain-structure is one of the most important rolls in QPM frequency converter devices. Therefore, we investigated the effect of the heat-treatment on domain-structure in QPM frequency convert devices using the MgSLT crystal.In addition, we investigated the thermal conductivities of non-doped congruent LiTaO_3 (CLT), non-doped near-stoichiometric LiTaO_3 (SLT), and MgSLT crystals along the X-, Y-, and Z-axes at room temperature.

利用准相位匹配（QPM）技术实现了20 W连续绿色（532 nm）激光输出。该激光器采用掺Mg（1mol%）的近化学计量比LiTaO_3（Mg_2O_3）晶体。这种高功率连续绿色激光器非常适合于激光投影和激光加工。因此，我们研究了热处理对MgO_3晶体QPM变频器件磁畴结构的影响，并研究了无掺杂同成分LiTaO_3（CLT）、无掺杂近化学计量比LiTaO_3（LiTaO_3）和MgO_3晶体沿着X、Y和Z轴的室温热导率。

项目成果

Anisotropy of thermal conductivities in non- and Mg-doped near-stoichiometric LiTaO3 crystals

• DOI: 10.1016/j.optmat.2010.04.041
• 发表时间: 2010-09-01
• 期刊: OPTICAL MATERIALS
• 影响因子: 3.9
• 作者: Nakamura, Masaru;Takekawa, Shunji;Kitamura, Kenji
• 通讯作者: Kitamura, Kenji

無添加およびMg添加定比組成LiTaO3結晶のX軸、Y軸、Z軸方向における熱伝導率

未添加和添加Mg化学计量LiTaO3晶体的X轴、Y轴和Z轴方向的热导率

• 发表时间: 2011
• 作者: 中村優;竹川俊二;北村健
• 通讯作者: 北村健

Thermal conductivity of Mg-doped near-stoichiometric composition LiTaO_3 crystal

Mg掺杂近化学计量组成的LiTaO_3晶体的热导率

• 发表时间: 2009
• 作者: M.Nakamura;S.Takekawa;K.Kitamura
• 通讯作者: K.Kitamura