Laser-probed resonant Voigt effect of OH molecules
| Autor: | Yoshiyuki Furuya, Manabu Yamamoto, Yoshitaka Takubo, Yoshihide Miyata, Kensuke Amemiya |
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| Rok vydání: | 1987 |
| Předmět: |
Materials science
Zeeman effect Dye laser business.industry Statistical and Nonlinear Physics Laser Polarization (waves) Atomic and Molecular Physics and Optics law.invention symbols.namesake Light intensity Optics law Faraday effect symbols Atomic physics business Laser-induced fluorescence Voigt effect |
| Zdroj: | Journal of the Optical Society of America B. 4:1212 |
| ISSN: | 1520-8540 0740-3224 |
| DOI: | 10.1364/josab.4.001212 |
| Popis: | The resonant Voigt effect (optical anisotropy induced in a transverse magnetic field) was investigated for OH radicals in aflame, with a narrow-band dye laser as a light source. Elliptically polarized light was tuned to the Q1(1) and Q21(1) lines in the electronic transition band A2 ∑+(v′ = 1)–X2 Πi(v″ = 1). The light polarization after passing through the flame was analyzed with an angle-offset birefringent prism. The measured profiles of the Voigt-effect signal were interpreted on the basis of the molecular Zeeman effect. By adjusting the light ellipticity and the analyzer offset angle, the signal-to-noise ratio (SNR) of the Voigt effect was improved over the estimated absorption SNR by a factor of ~102 in the detection of the above lines. This technique offers an alternative method of molecular spectroscopy. |
| Databáze: | OpenAIRE |
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