Frequency Comb Spectroscopy

Mid-IR frequency combs enable detection of molecular species showing absorption in the important molecular fingerprint region between 500 cm^-1 and 4000 cm^-1 (2.5–20 μm). Examples include the detection of pollutants such as ozone, methane, carbon monoxide, nitric oxide or biomarkers indicating malignoma or other severe diseases. Our current research focuses on high spectral resolution frequency comb spectroscopy.

Previous Relevant Work:

Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser

Jakob Fellinger, Aline S. Mayer, Georg Winkler, Wilfrid Grosinger, Gar-Wing Truong, Stefan Droste, Chen Li, Christoph M. Heyl, Ingmar Hartl, and Oliver H. Heckl, "Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser", Optics Express Vol. 27, Issue 20, pp. 28062-28074 (2019)

Direct frequency comb measurement of OD + CO → DOCO kinetics

B. J. Bjork, T. Q. Bui, O. H. Heckl, P. B. Changala, B. Spaun, P. Heu, D. Follman, C. Deutsch, G. D. Cole, M. Aspelmeyer, M. Okumura, and J. Ye, “Direct frequency comb measurement of OD + CO → DOCO kinetics,” Science (80-. )., vol. 354, no. 6311, p. 444 LP-448, Oct. 2016.

Continuous probing of cold complex molecules with infrared frequency comb spectroscopy

B. Spaun, P. B. Changala, D. Patterson, B. J. Bjork, O. H. Heckl, J. M. Doyle, and J. Ye, “Continuous probing of cold complex molecules with infrared frequency comb spectroscopy,” Nature, vol. 533, no. 7604, pp. 517–520, May 2016.