279 citations · 1.5k across the 34 of their papers we have counts for
35 papers
Triple-Resonance Spectroscopy Using a Cavity-Enhanced Frequency Comb Probe
Qinxue Nie, Vinicius Silva de Oliveira, Adrian Hjältén +3
Accurate experimentally verified models of molecular hot-band transitions are essential for interpreting high-temperature spectra in environments ranging from exoplanetary atmosphe…
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 (…
Combined frequency comb and continuous wave cavity-enhanced optical-optical double-resonance spectrometer in the 1.7 m range
Vinicius Silva de Oliveira, Adrian Hjältén, Isak Silander +4
We present an optical-optical double-resonance (OODR) spectrometer based on a 3.3 m continuous wave pump and two cavity-enhanced probes: a frequency comb tunable in the 1.64 - 1…
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…
Data availability and requirements relevant for the Ariel space mission and other exoplanet atmosphere applications
Katy L. Chubb, Séverine Robert, Clara Sousa-Silva +52
The goal of this white paper is to provide a snapshot of the data availability and data needs primarily for the Ariel space mission, but also for related atmospheric studies of exo…
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…
Dual-wavelength pumped highly birefringent microstructured silica fiber for widely tunable soliton self-frequency shift
Olga Szewczyk, Piotr Pala, Karol Tarnowski +8
We report the design of a microstructured silica-based fiber for widely tunable soliton self-frequency shift, suitable for pumping with two most common fiber laser wavelengths: 1.0…
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…
Compact mode-locked Er-doped fiber laser for broadband cavity-enhanced spectroscopy
Aleksander Głuszek, Francisco Senna Vieira, Arkadiusz Hudzikowski +4
We report the design and characteristics of a simple and compact mode-locked Er-doped fiber laser and its application to broadband cavity-enhanced spectroscopy. The graphene mode-l…
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…
Optical frequency comb photoacoustic spectroscopy
Ibrahim Sadiek, Tommi Mikkonen, Markku Vainio +2
We report the first photoacoustic detection scheme using an optical frequency comb - the optical frequency comb photoacoustic spectroscopy (OFC-PAS). OFC-PAS combines the broad spe…
Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequency comb
Alexandra C. Johansson, Lucile Rutkowski, Anna Filipsson +4
We present broadband cavity-enhanced complex refractive index spectroscopy (CE-CRIS), a technique for calibration-free determination of the complex refractive index of entire molec…
Optical frequency comb Faraday rotation spectroscopy
Alexandra C. Johansson, Jonas Westberg, Gerard Wysocki +1
We demonstrate optical frequency comb Faraday rotation spectroscopy (OFC-FRS) for broadband interference-free detection of paramagnetic species. The system is based on a femtosecon…
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…