279 citations · 1.5k across the 34 of their papers we have counts for
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Measurement and assignment of 10 rotational energy levels in the 9510 to 9810 cm and 6590 to 6900 cm ranges of methane using optical frequency comb double-resonance spectroscopy
Yuan Cao, Adrian Hjältén, Vinicius Silva de Oliveira +4
Accurate models of high temperature methane spectra are needed in astrophysics. Previous measurements of methane hot-band transitions in the 6 2 polyad…
Rotational energy levels in the ground vibrational state of methane with kHz-level accuracy from comb-referenced double-resonance and Lamb-dip spectroscopies
Vinicius Silva de Oliveira, Isak Silander, Hiroyuki Sasada +4
Methane is a key spherical-top molecule, yet restrictive selection rules for one-photon transitions have prevented determination of its ground state (GS) energies with state-of-the…
Optical frequency comb Fourier transform spectroscopy of the CHBrBr, CHBr, and CHBr isotopologues in the 1180-1210 cm region
Ibrahim Sadiek, Aleksandr A. Balashov, Adrian Hjältén +3
Quantitative spectroscopic detection of dibromomethane, CHBr, for environmental monitoring, workplace safety, and exoplanetary studies is limited by the lack of accurate ab…
Optical frequency comb double-resonance spectroscopy of the 9030-9175 cm states of ethylene
Adrian Hjältén, Vinicius Silva de Oliveira, Yuan Cao +3
We use optical-optical double-resonance (OODR) spectroscopy to measure for the first time hot-band transitions of ethylene (CH) between states in the 3000 cm and…
Measurement and assignment of E-symmetry states in the 6010-6110 cm and 8940-9150 cm ranges of methane using optical frequency comb double-resonance spectroscopy
Adrian Hjältén, Vinicius Silva de Oliveira, Michael Rey +3
We use sub-Doppler optical-optical double-resonance (OODR) spectroscopy with a 3.3 m single-frequency pump and a cavity-enhanced 1.65 m comb probe to measure 33 ladder-type (…
Assignment of collision-induced four-level double-resonance transitions in the 3 spectral region of methane
Kevin K. Lehmann, Isak Silander, Adrian Hjältén +2
Optical-optical double-resonance (OODR) spectroscopy using a narrow-linewidth pump and a frequency comb probe has previously been used to measure and assign sub-Doppler transitions…
Precision frequency comb spectroscopy of the NO, NNO, NNO, and NO isotopocules in the 3300-3550 cm range
Adrian Hjältén, Ibrahim Sadiek, Aleksandra Foltynowicz
Nitrous oxide is a long-lived greenhouse gas. Its isotopic composition provides valuable insights into sources and sinks, and about the mechanism of formation. A major challenge in…
Measurement and assignment of J = 5 to 9 rotational energy levels in the 9070-9370 cm range of methane using optical frequency comb double-resonance spectroscopy
Adrian Hjältén, Vinicius Silva de Oliveira, Isak Silander +6
We use optical-optical double-resonance (OODR) spectroscopy with a continuous wave (CW) pump and a cavity-enhanced frequency comb probe to measure high rotational energy levels of…
Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe
Vinicius Silva de Oliveira, Isak Silander, Lucile Rutkowski +4
Accurate parameters of molecular hot-band transitions, i.e., those starting from vibrationally excited levels, are needed to accurately model high-temperature spectra in astrophysi…
Optical frequency comb Fourier transform spectroscopy of formaldehyde in the 1250 to 1390 cm range: experimental line list and improved MARVEL analysis
Matthias Germann, Adrian Hjältén, Jonathan Tennyson +9
We use optical frequency comb Fourier transform spectroscopy to record high-resolution, low-pressure, room-temperature spectra of formaldehyde (HCO) in the range…
Line positions and intensities of the band of CHI using mid-infrared optical frequency comb Fourier transform spectroscopy
Adrian Hjältén, Aleksandra Foltynowicz, Ibrahim Sadiek
We present a new spectral analysis of the and +- bands of CHI around 2971 cm based on a high-resolution spectrum spanning from 2800 cm…
A methane line list with sub-MHz accuracy in the 1250 to 1380 cm-1 range from optical frequency comb Fourier transform spectroscopy
Matthias Germann, Adrian Hjältén, Vincent Boudon +6
We use a Fourier transform spectrometer based on a difference frequency generation optical frequency comb to measure high-resolution, low-pressure, room-temperature spectra of meth…
Optical Frequency Comb Fourier Transform Spectroscopy of NO at 7.8 μm
Adrian Hjältén, Matthias Germann, Karol Krzempek +5
We use a Fourier transform spectrometer based on a compact mid-infrared difference frequency generation comb source to perform broadband high-resolution measurements of nitrous oxi…
Line Positions and Intensities of the ν Band of Methyl Iodide Using Mid-Infrared Optical Frequency Comb Fourier Transform Spectroscopy
Ibrahim Sadiek, Adrian Hjältén, Francisco Senna Vieira +3
We use optical frequency comb Fourier transform spectroscopy to measure high-resolution spectra of iodomethane, CHI in the C-H stretch region from 2800 to 3160 cm. The f…
Sub-Doppler Double-Resonance Spectroscopy of Methane Using a Frequency Comb Probe
Aleksandra Foltynowicz, Lucile Rutkowski, Isak Silander +7
We report the measurement of sub-Doppler double-resonance transitions in methane using a 3.3 m continuous wave optical parametric oscillator to pump transitions in the fundament…
An experimental water line list at 1950 K in the 6250 -- 6670 \cm\ region
Lucile Rutkowski, Aleksandra Foltynowicz, Florian M. Schmidt +7
An absorption spectrum of HO at 1950 K is recorded in a premixed methane/air flat flame using a cavity-enhanced optical frequency comb-based Fourier transform spectromet…