Spectroscopy of the methane {nu}{sub 3} band with an accurate midinfrared coherent dual-comb spectrometer
By Esther Baumann, F. Giorgetta, William C. Swann, A. Zolot, Ian Coddington, Nathan R. Newbury. 2011
215 citations recorded by the source corpus.
We demonstrate a high-accuracy dual-comb spectrometer centered at 3.4 {mu}m. The amplitude and phase spectra of the P, Q, and partial R branches of the methane {nu}{sub 3} band are measured at 25 to 100 MHz point spacing with resolution under 10 kHz and a signal-to-noise ratio of up to 3500. A fit of the absorbance and phase spectra yields the center frequency of 132 rovibrational lines. The systematic uncertainty is estimated to be 300 kHz, which is 10{sup -3} of the Doppler width and a 10-fold improvement over Fourier transform spectroscopy. These data quantify the accuracy and resolution achievable with direct comb spectroscopy in the midinfrared.
Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/b9a6169a39aabb967681a1c3bc150ea9fb69e036
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In Atomic and Molecular Physics, and Optics
In Spectroscopy
Citations in the corpus
- Dual-comb spectroscopy (2016, unknown): “DCS has been applied to ultrabroadband near-IR spectroscopy [50], to near-field microscopy for subwavelength spatial resolution [5,8], to precision metrology of molecular line centers [22,29,50], to a spectral lidar [21,31], and to greenhouse gas monitoring [36,51,53].”
- Optical gas sensing: a review (2012, methodology): “4 μm with an NEA of 3 x 10 -4 [252] , and Schliesser et al used a GaSe element to provide a DFG based mid IR dual comb spectrometer covering the 9-12 μm region [253] .”