MPQ-scientists record broad absorption spectra on a microsecond scale with two laser frequency combs.
A team of scientists around Dr. Nathalie Picqué and
Prof. Theodor W. Hänsch at the Laser Spectroscopy Division of the Max
Planck Institute of Quantum Optics (Garching), in a collaboration with
the Ludwig-Maximilians-Universität Munich and the Institut des Sciences
Moléculaires d’Orsay (France) now reports on a new method of real-time
identification and quantification of molecular species (Nature Communications 5, 3375 – Feb. 27, 2014).
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| Portion of a dual-comb real-time absorption spectrum of acetylene in the near-infrared region. While the spectrum without the adaptive sampling (blind sampling) is strongly distorted, the adaptive spectrum accurately reveals the molecular profiles. (Graphic: MPQ, Laser Spectroscopy Division) |
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