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.

以窄带可调谐染料激光器为光源，以火焰中的钠原子为样品，研究了福伊特构型（横向磁场）中共振磁光效应的分析检测灵敏度。将椭圆偏振激光束调谐至钠<D_2>线。通过调整入射光的椭圆率和偏振分析器的方向来优化信噪比。观察到的 Voigt 信号轮廓与理论预测一致。与相同实验布置中的原子吸收相比，Voigt 效应的检测灵敏度提高了 2 x <10^2> 倍。由福伊特效应和吸收获得的原子序数密度的绝对值在实验精度内一致。

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: 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。

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。