Mid-infrared feed-forward dual-comb spectroscopy at 3 m
arXiv:1810.01716 · doi:10.1073/pnas.1819082116
Abstract
Mid-infrared high-resolution spectroscopy has proven an invaluable tool for the study of the structure and dynamics of molecules in the gas phase. The advent of frequency combs advances the frontiers of precise molecular spectroscopy. Here we demonstrate, in the important 3-μm spectral region of the fundamental CH stretch in molecules, dual-comb spectroscopy with experimental coherence times between the combs that exceed half-an-hour. Mid-infrared Fourier transform spectroscopy using two frequency combs with self-calibration of the frequency scale, negligible contribution of the instrumental line-shape to the spectral profiles, high signal-to-noise ratio and broad spectral bandwidth opens up novel opportunities for precision spectroscopy of small molecules. Highly multiplexed metrology of line shapes may be envisioned.
15 pages, 6 figures
References in corpus (5)
- Frequency comb spectroscopy
- Silicon-Chip Mid-Infrared Frequency Comb Generation
- An octave spanning mid-infrared frequency comb generated in a silicon nanophotonic wire waveguide
- Sensitive multiplex spectroscopy in the molecular fingerprint 2.4 m region with a Cr^{2+}:ZnSe femtosecond laser
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Cited by in corpus (13)
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- Entanglement-enhanced dual-comb spectroscopy
- Ultraviolet Dual Comb Spectroscopy: A Roadmap
- Quasi-real-time dual-comb spectroscopy with 750-MHz Yb:fiber combs
- Mid-infrared quantum cascade laser frequency combs based on multi-section waveguides
- Rhythmic soliton interactions for integrated dual-microcomb spectroscopy
- Non-resonant Optical Injection Locking in Quantum Cascade Laser Frequency Combs
- Broadband infrared spectroscopy of condensed phases with two intra-pulse difference-frequency-generation frequency combs
- Vibrational Stark Spectroscopy on Fluorobenzene with Quantum Cascade Laser Dual Frequency Combs