A new gas detection technique utilizing amplified spontaneous emission light source from a Tm+3/Ho+3 co-doped silica fibre in the 2.0 μm region

Kyunghwan Oh, T. F. Morse, A. Kilian

Research output: Contribution to journalArticle

4 Citations (Scopus)


A new technique for the measurement of the concentration of gas species is presented. The method is based on absorption spectroscopy in the infrared region utilizing a high-power broad band amplified spontaneous emission source from an optical fibre. Vibrational bands of CO2 gas in the range 1.9-2.1 μm were measured and the relative intensities of bands were calibrated in terms of concentration. The amplified spontaneous emission from a Tm+3/Ho+3 co-doped silica fibre pumped near 800 nm was used as a light source that consisted of the 3H43H6 transition of the Tm+3 ion and the 5I75I8 transition of the Ho+3 ion with a full width at half maximum of 225 nm and total output power over 1 mW. The technique has potential for the simultaneous detection of multiple gas species due to its high spectral energy density over a wide wavelength band in the infrared where the vibrational overtones of gas molecules are located.

Original languageEnglish
Pages (from-to)1409-1412
Number of pages4
JournalMeasurement Science and Technology
Issue number9
Publication statusPublished - 1998 Jan 1


All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

Cite this