Fabrication of Second-Order Nonlinear Silicate Glass Waveguide And Frequency Conversion or Ultraviolet Region

二阶非线性硅酸盐玻璃波导及变频或紫外区的制作

• 批准号: 09650047
• 负责人: OKAMOTO Naomichi
• 金额: $ 2.18万
• 依托单位: SHIZUOKA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650047/
• 关键词: Glass; 2nd-Order Nonlinearity; Thermal Poling; Electron-Beam Poling; Stability against UV; Blue SHG; X^<(2)> Grating; ガラス; 2次非線形光学特性; X^<(2)>回折格子; 石英ガラス; ポーリング; 青色第2高調波発生; 光導波路; 単一モードチャネル導波路; チェレンコーフタイプ位相整合

Ge-doped silica and Ti-doped silica thin films on various substrate material were prepared by sol-gel processing and rf-sputtering. Large SHGs were measured from the thermally poled silicate thin film samples. From our study the origin of nonlinearity and its distribution from thermally poled silicate thin films were suggested.The longest lifetime of the nonlinearity was measured to be 310 years by Arrenius plot, and the nonlinearity showed great resistance against intense laser illumination to UV region. Moreover, the processing of channel waveguide device fabrication using photolithography and etching was carried out, and by Cerenkov-type frequency doubling green and bule light generations were realized.Second-order nonlinearity is induced in if-sputtered silicate glass thin films by electron-beam (EB) irradiation. The value of second-order nonlinear optical coefficient d33 of one of the EB poled silicate thin films is estimated as 0.33 pm/V.It is found that the uniform nonlinearity is distributed throughout the thin film region. Moreover, a periodically poled structure is realized based-on direct EB writing technique.

采用溶胶-凝胶法和射频溅射法在不同衬底材料上制备了Ge掺杂和Ti掺杂的SiO2薄膜。从热极化的硅酸盐薄膜样品中测量了大的SHG。提出了热极化硅酸盐薄膜非线性效应的来源及其分布，用Arrenius曲线测得非线性效应的最长寿命为310年，并且对紫外区强激光照射有很强的抵抗能力。采用光刻和刻蚀技术制备了沟道波导器件，实现了Cerenkov型倍频绿色和蓝光的产生，并在溅射硅酸盐玻璃薄膜中引入了二阶非线性效应。的EB极化的硅酸盐薄膜的二阶非线性光学系数d33的值被估计为0.33 pm/V。它被发现，均匀的非线性分布在整个薄膜区域。此外，基于直接电子束写入技术实现了周期极化结构。

项目成果

M.Nakanishi, O.Sugihara, N.Okamoto et al: "Blue light generation by Cerenkov-type SHG in poled silicate waveguide" Jpn.J.Appl.Phys.37, Suppl.37. 75-77 (1998)

M.Nakanishi、O.Sugihara、N.Okamoto 等人：“极化硅酸盐波导中切伦科夫型 SHG 产生蓝光”Jpn.J.Appl.Phys.37，Suppl.37。

杉原、江上、岡本他: "Thermally poled silicate thin films with large SHG" J.Opt.Soc.Am.B. 15・1. 421-425 (1998)

Sugihara、Egami、Okamoto 等人：“具有大 SHG 的热极化硅酸盐薄膜”J.Opt.Soc.Am.B 15・1 (1998)。

O.Sugihara, C.Egami, N.Okamoto et al: "Thermally poled silicate thin films with large Second-harmonic generation" J.Opt.Soc.Am.B. 15(1). 421-425 (1998)

O.Sugihara、C.Egami、N.Okamoto 等人：“具有大量二次谐波产生的热极化硅酸盐薄膜”J.Opt.Soc.Am.B。

杉原、江上、岡本他: "Cerenkov-type frequency doubling from thermally poled silicate glass waveguide" Int.Workshop on Structure & Functional Opt.Prop.of Silica Glasses. Jul.10. 67-70 (1997)

Sugihara、Egami、Okamoto 等人：“热极化硅酸盐玻璃波导的切伦科夫型倍频”Int.Workshop on Structure & Function Opt.Prop.of Silica Glasses Jul.10 (1997)。

中西、杉原、岡本他: "Blue light generation by Cerenkov-type SHG in poled silicate waveguide" Jpn.J.Appl.Phys.37, Suppl.75-77 (1998)

Nakanishi、Sugihara、Okamoto 等人：“极化硅酸盐波导中切伦科夫型 SHG 产生蓝光”Jpn.J.Appl.Phys.37，Suppl.75-77 (1998)