Doppler spectroscopy of NH3 and SF6 in the 10-μm range with a tunable AgGaS2 difference-frequency spectrometer

J. J. Zondy, V. Vedenyapine, T. Kaing, D. Lee, A. Yelisseyev, L. Isaenko, S. Lobanov

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A continuous-wave mid-IR diode-laser-based, dual-cavity difference-frequency spectrometer employing silver thiogallate (AgGaS 2) as the down-conversion material, and producing only 30 nW of usable mid-IR output, is used to record Doppler spectra of NH3 and SF6 around 10.2 μm and 10.5 μm over the 90-GHz range. The tuning procedure of the spectrometer as well as a baseline noise cancellation technique based on analogue signal ratioing are described. The device can potentially be used for ultra-high-resolution saturation spectroscopy, pending an improvement of the down-conversion efficiency to l-μW power.

Original languageEnglish
Pages (from-to)457-463
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume78
Issue number3-4
DOIs
Publication statusPublished - Feb 2004
Externally publishedYes

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spectrometers
cancellation
spectroscopy
continuous radiation
semiconductor lasers
tuning
silver
analogs
saturation
cavities
output
high resolution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Doppler spectroscopy of NH3 and SF6 in the 10-μm range with a tunable AgGaS2 difference-frequency spectrometer. / Zondy, J. J.; Vedenyapine, V.; Kaing, T.; Lee, D.; Yelisseyev, A.; Isaenko, L.; Lobanov, S.

In: Applied Physics B: Lasers and Optics, Vol. 78, No. 3-4, 02.2004, p. 457-463.

Research output: Contribution to journalArticle

Zondy, J. J. ; Vedenyapine, V. ; Kaing, T. ; Lee, D. ; Yelisseyev, A. ; Isaenko, L. ; Lobanov, S. / Doppler spectroscopy of NH3 and SF6 in the 10-μm range with a tunable AgGaS2 difference-frequency spectrometer. In: Applied Physics B: Lasers and Optics. 2004 ; Vol. 78, No. 3-4. pp. 457-463.
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