Sub-Doppler Double-Resonance Spectroscopy of Methane Using a Frequency Comb Probe

We report the first measurement of sub-Doppler molecular response using a frequency comb by employing the comb as a probe in optical-optical double-resonance spectroscopy. We use a 3.3 μm continuous wave pump and a 1.67 μm comb probe to detect sub-Doppler transitions to the 2ν3 and 3ν3 bands of methane with ∼1.7 MHz center frequency accuracy. These measurements provide the first verification of the accuracy of theoretical predictions from highly vibrationally excited states, needed to model the high-temperature spectra of exoplanets. Transition frequencies to the 3ν3 band show good agreement with the TheoReTS line list.

Rutkowski, LucileUniversité de Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France (author)
Silander, Isak,1980-Umeå universitet,Institutionen för fysik(Swepub:umu)issi0002 (author)
Johansson, Alexandra C.,1987-Umeå universitet,Institutionen för fysik(Swepub:umu)aljo0004 (author)
Silva de Oliveira, ViniciusUmeå universitet,Institutionen för fysik(Swepub:umu)visi0015 (author)
Axner, OveUmeå universitet,Institutionen för fysik(Swepub:umu)ovax0001 (author)
Soboń, GrzegorzLaser and Fiber Electronics Group, Faculty of Electronics, Wrocław University of Science and Technology, Wroclaw, Poland (author)
Martynkien, TadeuszFaculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Wroclaw, Poland (author)
Mergo, PawełLaboratory of Optical Fiber Technology, Maria Curie-Sklodowska University, Lublin, Poland (author)
Lehmann, Kevin K.Departments of Chemistry and Physics, University of Virginia, VA, Charlottesville, United States (author)
Umeå universitetInstitutionen för fysik (creator_code:org_t)

By the author/editor: Foltynowicz, Ale ...; Rutkowski, Lucil ...; Silander, Isak, ...; Johansson, Alexa ...; Silva de Oliveir ...; Axner, Ove; show more...; Soboń, Grzegorz; Martynkien, Tade ...; Mergo, Paweł; Lehmann, Kevin K ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Atom and Molecul ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.