Compact, broadly tunable mid-IR source for the spectroscopic investigation of molecular reference lines in the 27 to 33 THz range

T. Kaing, J. J. Zondy, A. Yelisseyev, S. Lobanov, L. Isaenko

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

We report on the improvement of a tunable diode-laser-based difference-frequency spectrometer using AgGaS2 nonlinear crystal. This spectrometer is being developed as an alternative to CO2 laser spectrometers in the 9 μm to 11 μm range. We use a type-II cut crystal as a part of the improvement compared to a type-I cut, which was used in our preliminary set-up. Using a Fabry-Perot cavity to enhance the 780-nm power (35 mW in front of the cavity) and 120 mW of the 843-nm radiation, 30-nW power of the tunable 10-μm radiation is detected. This power level is enough to investigate the linear absorption spectroscopy of SF6. Doppler limited spectra over 2 GHz are recorded, showing the wide tunability of the spectrometer.

Original languageEnglish
Title of host publicationProceedings of the Annual IEEE International Frequency Control Symposium
PublisherIEEE
Pages734-737
Number of pages4
Volume2
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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