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1986 Fiscal Year Final Research Report Summary

Detection of molecules by the resonant Voigt effect spectroscopy

Research Project

Project/Area Number 60550018
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 物理計測・光学
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

YAMAMOTO Manabu  Tokyo University of Agriculture and Technology, 工学部, 教授 (60166824)

Co-Investigator(Kenkyū-buntansha) TAKUBO Yoshitaka  Tokyo University of Agriculture and Technology, 工学部, 助教授 (10015109)
Project Period (FY) 1985 – 1986
KeywordsVoigt effect / Laser spectroscopy / High-sensitivity spectroscopy / Molecular spectroscopy / Zeeman effect / Magneto-optic effect / Dye laser / OH分子
Research Abstract

The resonant Voigt effect (optical anisotropy induced in a transverse magnetic field) was investigated for OH radicals in a flame with a narrow-band dye laser as a light source. Elliptically polarized light was tuned to the <Q_1> (1) and <Q_(21)> (1) lines in the electronic transition band <A^2> <SIGMA^+> (v'=1)- <X^2> <PAI_i> (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 <about> <10^2> in the detection of the above lines. This technique offers an alternative method of molecular spectroscopy.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Manabu Yamamoto: J.Opt.Soc.Am.B(accepted for publication). (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Manabu Yamamoto: J.Opt.Soc.Am.A. 2. 57 (1985)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Manabu YAMAMOTO et al.: "Detection Sensitivity of the Laser Resonant Voigt Effect" J. Opt. Soc. Am. A. 2. P57 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Manabu YAMAMOTO et al.: "Laser-Probed Resonant Voigt Effect of OH Molecules" J. Opt. Soc. Am. B. (1987)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1988-11-09  

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