Electronic resonant multiplex SFG spectroscopy with tunable UV probe

具有可调谐 UV 探头的电子共振多重 SFG 光谱

• 批准号: 16360023
• 负责人: ISHIBASHI Takaaki
• 金额: $ 9.22万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360023/
• 关键词: surface gum-frequency generation; multiplex SFG; UV probe; electronic resonance; broad bandwidth IR probe

We have constructed a multiplex IR-UV SFG spectrometer that has a wide tunable range (235-400 nm) of the UV probe wavelength. A prism monochromator was used as a tunable sharp-cut bandpass filter to reduce stray light due to the scattering of the UV probe so that any wavelength within the tunable range can be chosen as that of the visible probe.The IR-UV SFG spectrometer : The probe light source is based on a Ti : sapphire amplifier operated at 1 kHz. A femtosecond broad-bandwidth (200 cm^<-1>) IR pulse and a picosecond narrow-bandwidth (10 cm^<-1>) UV pulse are obtained as the probe lights by converting the fundamental output of the amplifier with nonlinear optical techniques. The wavelength of the UV pulse is tunable in the range of 235-400 nm. A grating polychromator (f=55 cm, 4320 grooves/mm) combined with a prism monochromator (f=20 cm) is used as the spectrograph for analyzing broad-bandwidth SFG signal. The prism monochromator acts as a tunable sharp-cut bandpass filter to reduce stray light due to the scattering of the UV probe.Test measurements : Test measurements were conducted on a p-mercaptobenzoic acid (HOOC-C_6H_4-SH) monolayer on a gold substrate. SFG spectra of p-mercaptobenzoic acid on a gold substrate were measured with 289 nm and 334 nm UV probes. Two vibrational bands were identified on the spectrum. These bands were assigned to phenyl ring stretch (〜1590 cm^<-1>), COOH stretch (〜1746 cm^<-1>). The SFG intensity of the stretch mode with 289 nm was three times larger than that with 334 nm probe. The enhancement was ascribed to due to electronic resonant effect with a strong absorption of the molecule located at 275 nm.

我们的COSM单色器是波长。在Ti：蓝宝石放大器以1 kHz运行。用非线性的光学技术的放大器。由于紫外线探针的散射。 COOH拉伸（-1746 cm^<-1>）。由于电子谐振效应，归因于334 nm探针的拉伸模式比334 nm探针更大。

项目成果

Fourth-Order Raman Spectroscopy of Wide-Bandgap Materials

宽带隙材料的四阶拉曼光谱

• 发表时间: 2005
• 期刊: Journal of Molecular Structure 735-736C
• 作者: Satoru Fujiyoshi;Taka-aki Ishibashi;Hiroshi Onishi
• 通讯作者: Hiroshi Onishi

Interface-Specific Vibrational Spectroscpy of Molesules with Visible Lights

可见光分子的界面特异性振动光谱

• 发表时间: 2004
• 期刊: Journal of Physical Chemistry B 108
• 作者: Satoru Fujiyoshi;Taka-aki ishibashi;Hiroshi Onishi
• 通讯作者: Hiroshi Onishi

Time-resolved infrared absorption study of photocatalysts and related materials

光催化剂及相关材料的时间分辨红外吸收研究

• 发表时间: 2005
• 期刊: Topics in Catalysis 35
• 作者: Akira Yamakata;Taka-aki Ishibashi;Kan Takeshita;Hiroshi Onishi
• 通讯作者: Hiroshi Onishi

7.3.4 Infrared-Visible Sum-frequency Generation spectroscopy, 8.3.3 Nonlinear Raman Spectroscopy, The Fifth Series of Experimental Chemistry, Vol.9 Spectroscopy and Diffraction I

7.3.4 红外-可见光和频发生光谱学，8.3.3 非线性拉曼光谱学，实验化学第五辑，第9卷光谱学与衍射I

• 发表时间: 2005
• 作者: S.Kobayashi;et. al.;Taka-aki Ishibashi
• 通讯作者: Taka-aki Ishibashi

実験化学講座9、物質の構造I、分光 上(7.3.4節と8.3.3節の執筆を担当)

实验化学课程9，物质结构I，光谱学第1部分（负责撰写第7.3.4和8.3.3节）

• 发表时间: 2005
• 作者: Tomonori Nomoto;Taka-aki Ishibashi;Hiromi Okamoto;Hiro-o Hamaguchi;石橋孝章
• 通讯作者: 石橋孝章