Trace element detection method and apparatus based on the resonant Voigt effect spectroscopy

基于共振福伊特效应光谱的微量元素检测方法及装置

• 批准号: 60850010
• 负责人: YAMAMOTO Manabu
• 金额: $ 2.11万
• 依托单位: TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60850010/
• 关键词: Voigt effect; Laser spectroscopy; High-resolution spectroscopy; Atomic spectroscopy; Zeeman effect; Magneto-optic effect; Dye laser; ナトリウム原子; フォークト効果; 高感度元素検出

Analytical detection sensitivity of the resonant magneto-optic effect in the Voigt configuration (transverse magnetic field) was investigated by using a narrow-band tunable dye laser as a light source and sodium atoms in a flame as a sample. The elliptically polarized laser beam was tuned to the sodium <D_2> line. The signal to noise ratio was optimized by adjusting the ellipticity of incident light and the orientation of the polarization analyzer. The observed profiles of the Voigt signal agreed with the theoretical prediction. The detection sensitivity of the Voigt effect was enhanced by a factor of 2 x <10^2> when compared with the atomic absorption in the same experimental arrangement. The absolute values of the atomic number density obtained from the Voigt effect and the absorption agreed within the experimental accuracy.

通过将窄带可调染料激光作为光源和火焰中的钠原子作为样品研究，研究了VOIGT构型中谐振磁磁效应（横向磁场）的分析检测灵敏度。将椭圆极化激光束调整为钠<D_2>线。通过调节入射光的椭圆度和极化分析仪的方向来优化信号与噪声比。 VOIGT信号的观察到的曲线与理论预测一致。与在相同的实验排列中的原子吸收相比，VOIGT效应的检测灵敏度增强了2 x <10^2>。从VOIGT效应获得的原子数密度的绝对值和实验精度中达成的吸收。

项目成果

Manabu YAMAMOTO et al.: "Analytical Detection Sensitivity of the Laser-Probed Resonant Voigt Effect" J. Opt. Soc. Am. B. 3. 1245-1250 (1986)

Manabu YAMAMOTO 等人：“激光探测共振 Voigt 效应的分析检测灵敏度”J. Opt。

Manabu YAMAMOTO et al.: "Detection Sensitivity of the Laser Resonant Voigt Effect" J. Opt. Soc. Am. A. 2. P57 (1985)

Manabu YAMAMOTO 等人：“激光谐振 Voigt 效应的检测灵敏度”J. Opt。

Manabu Yamamoto: J.Opt.Soc.Am.B.3. 1245-1250 (1986)

山本学：J.Opt.Soc.Am.B.3。

Manabu YAMAMOTO: J.Opt.Soc.Am.A.2. P57 (1985)

山本学：J.Opt.Soc.Am.A.2。