Fiber laser intracavity absorption spectroscopy of ammonia and hydrogen cyanide in low pressure hydrocarbon flames

A. Goldman, I. Rahinov, S. Cheskis, B. Löhden, S. Wexler, K. Sengstock, V. M. Baev

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Fiber laser intracavity spectroscopy (FLICAS) with Er-doped fiber laser has been applied for the first in situ detection of ammonia and hydrogen cyanide in a low pressure (30 Torr) stoichiometric methane/nitrogen/oxygen flame doped with 0.13-1.36% of NH3. High resolution spectra of NH3 and HCN have been recorded in the range of 1.5 μm (6440-6540 cm-1). The minimum detectable concentration of HCN and NH3 at a laser pulse duration of 8 μs and room temperature is 1 × 1013 molecule/cm3. The method can be used for in situ detection of many other molecules in the hostile combustion environment.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalChemical Physics Letters
Volume423
Issue number1-3
DOIs
StatePublished - 20 May 2006
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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