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 journalArticlepeer-review

6 Citations (Scopus)


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
Issue number3-4
Publication statusPublished - Feb 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Doppler spectroscopy of NH<sub>3</sub> and SF<sub>6</sub> in the 10-μm range with a tunable AgGaS<sub>2</sub> difference-frequency spectrometer'. Together they form a unique fingerprint.

Cite this