Enhancement of sensitivity of optogalvanic spectroscopy in a flame by laser ionization

Yuji Oki, Nobutaka Kidera, Mitsuo Maeda

Research output: Contribution to journalArticle


In usual optogalvanic spectroscopy in a flame, the signal is obtained by thermal ionization of selectively excited species. The optogalvanic signal in a flame was remarkably enhanced by selective multi-step photo-ionization, when an intense UV laser beam was applied into the flame. The enhancement factor exceeded 100 and a detection limit of 5 ppt (pg/ml) was obtained, when this technique was applied for tracing atomic Ca in water.

Original languageEnglish
Pages (from-to)105-108
Number of pages4
JournalOptics Communications
Issue number1-2
Publication statusPublished - Aug 1 1994


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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