Doppler-Free Spectrum of the Barium 1S0−1P1 Transition by Degenerate Four-Wave Mixing Using an Air/Acetylene Flame
| Autor: | Kenneth M. Weed, William G. Tong, John M. Andrews |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Dye laser
010401 analytical chemistry Analytical chemistry chemistry.chemical_element Barium 01 natural sciences 0104 chemical sciences 010309 optics Laser linewidth Full width at half maximum Four-wave mixing chemistry 0103 physical sciences Spectral resolution Phase conjugation Instrumentation Spectroscopy Mixing (physics) |
| Zdroj: | Applied Spectroscopy. 45:697-700 |
| ISSN: | 1943-3530 0003-7028 |
| DOI: | 10.1366/0003702914336958 |
| Popis: | Doppler-free flame spectrometry based on resonant degenerate four-wave mixing (D4WM) is shown to be an effective analytical tool for the determination of barium at high spectral resolution. Optical phase conjugation is produced in an air/acetylene flame, resulting in an optical signal that is a coherent time-reversed replica of the probe beam. The degenerate four-wave mixing spectrum of barium for the 6 s21 S0-6 s6 p1 P1 transition at 18,060.19 cm−1 is collected with a linewidth of 0.08 cm−1 (FWHM) with the use of a convenient continuously flowing atmospheric-pressure flame atomizer. A preliminary detection limit of 5 μg/mL barium, while a Doppler-free linewidth is maintained at 0.08 cm−1, is reported. |
| Databáze: | OpenAIRE |
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