2026 Triple-resonance spectroscopy using a cavity-enhanced frequency comb probe Q. Nie, V. Silva de Oliveira, A. Hjältén, I. Silander, K. K. Lehmann, and A. Foltynowicz arXiv: 2607.15793
Measurement and assignment of J ≥ 10 rotational energy levels in the 9510 to 9810 cm-1 and 6590 to 6900 cm-1 ranges of methane using optical frequency comb double-resonance spectroscopy Y. Cao, A. Hjältén, V. Silva de Oliveira, I. Silander, M. Rey, K. K. Lehmann, and A. Foltynowicz arXiv: 2607.12932
Optical frequency comb Fourier transform spectroscopy of the CH279Br81Br, CH279Br2, and CH281Br2 isotopologues in the 1180–1210 cm-1 region I. Sadiek, A. A. Balashov, A. Hjältén, M. Rey, O. Egorov, and A. Foltynowicz Phys. Chem. Chem. Phys. (2026) arXiv: 2604.00244 cited: 0 IF:
Optical frequency comb double-resonance spectroscopy of the 9030-9175 cm-1 states of ethylene A. Hjältén, V. Silva de Oliveira, Y. Cao, I. Silander, K. K. Lehmann, and A. Foltynowicz J. Chem. Phys. 165, 014304 (2026)
Measurement and assignment of E-symmetry states in the 6010-6110 cm−1 and 8940-9150 cm−1 ranges of methane using optical frequency comb double-resonance spectroscopy A. Hjältén, V. Silva de Oliveira, M. Rey, I. Silander, K. K. Lehmann, and A. Foltynowicz J. Quant. Spectr. Radiat. Transfer 353, 109831 (2026)
2025 HNO dimerization as a chemical reference standard for N2O isotopomer ratio: ab initio calculations, formation kinetics, and frequency comb spectroscopy I. Sadiek, A. Hjältén, G. Friedrichs, and A. Foltynowicz JACS 147, 38110-38127 (2025)
Combined frequency comb and continuous wave cavity-enhanced optical-optical double resonance spectrometer in the 1.7 µm range V. Silva de Oliveira, A. Hjältén, I. Silander, A. Rosina, M. Rey, K. K. Lehmann, and A. Foltynowicz Opt. Express 33, 38776-38802 (2025)
Assignment of collision-induced four-level double-resonance transitions in the 3v3 ← v3 spectral region of methane K. K. Lehmann, I. Silander, A. Hjältén, M. Rey, and A. Foltynowicz J. Chem. Phys. 163, 144304 (2025)
Precision frequency comb spectroscopy of the 14N2O, 14N15NO, 15N14NO, and 15N2O isotopocules in the 3300 – 3550 cm–1 range A. Hjältén, I. Sadiek, and A. Foltynowicz J. Quant. Spectr. Radiat. Transfer 340, 109452 (2025) 2024 Data availability and requirements relevant for the Ariel space mission and other exoplanet atmosphere applications K. Chubb, S. Robert, C. Sousa-Silva, S. N. Yurchenko, N. F. Allard, V. Boudon, J. Buldyreva, B. Bultel, A. Coustenis, A. Foltynowicz, I. E. Gordon, R. J. Hargreaves, C. Helling, C. Hill, H. Rafn Hrodmarsson, T. Karman, H. Lecoq-Molinos, A. Migliorini, M. Rey, C. Richard, I. Sadiek, F. Schmidt, A. Sokolov, S. Stefani, J. Tennyson, O. Venot, S. O. M. Wright, R. Arenales-Lope, J. K. Barstow, A. Bocchieri, N. Carrasco, D. Dubey, O. Egorov, A. García Muñoz, E. Gharib-Nezhad, L. Gkouvelis, F. Grübel, P. G. J. Irwin, A. Knížek, D. A. Lewis, M. G. Lodge, S. Ma, Z. Martins, K. Molaverdikhani, G. Morello, A. Nikitin, E. Panek, M. Rengel, G. Rinaldi, J. W. Skinner, G. Tinetti, T. A. van Kempen, J. Yang, T. Zingales RAS Techniques and Instruments 1, 636-690 (2024)
Measurement and assignment of J = 5 to 9 rotational energy levels in the 9070-9370 cm-1 range of methane using optical frequency comb double-resonance spectroscopy A. Hjältén, V. Silva de Oliveira, I. Silander, A. Rosina, M. Rey, L. Rutkowski, G. Sobon, K. K. Lehmann, and A. Foltynowicz J. Chem. Phys. 161, 124311 (2024)
Addendum: Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe V. Silva de Oliveira, I. Silander, L. Rutkowski, G. Soboń, O. Axner, K. K. Lehmann, and A. Foltynowicz Nat. Commun. 15, 7410 (2024)
Mid-infrared optical frequency comb spectroscopy using an all-silica antiresonant hollow-core fiber D. Tomaszewska-Rolla, P. Jaworski, D. Wu, F. Yu, A. Foltynowicz, K. Krzempek, and G. Soboń Opt. Express 32, 10679-10689 (2024)
Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe V. Silva de Oliveira, I. Silander, L. Rutkowski, G. Soboń, O. Axner, K. K. Lehmann, and A. Foltynowicz Nat. Commun. 15, 161 (2024)
Procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry J. Zakrisson, I. Silander, V. Silva de Oliveira, A. Hjältén, A. Rosina, T. Rubin, A. Foltynowicz, M. Zelan, and O. Axner Opt. Express 32, 3959-3973 (2024) 2023 Optical frequency comb Fourier transform spectroscopy of formaldehyde in the 1250 to 1390 cm-1 range: experimental line list and improved MARVEL analysis M. Germann, A. Hjältén, J. Tennyson, S.N. Yurchenko, I. E. Gordon, C. Pett, I. Silander, K. Krzempek, A. Hudzikowski, A. Głuszek, G. Soboń, and A. Foltynowicz J. Quant. Spectr. Radiat. Transf. 312, 108782 (2023)
Line positions and intensities of the ν1 band of 12CH3I using mid-infrared optical frequency comb Fourier transform spectroscopy CH3I A. Hjältén, A. Foltynowicz, and I. Sadiek, J. Quant. Spectr. Radiat. Transf. 306, 108646 (2023)
Optical frequency comb-based measurements and revisited assignment of high-resolution spectra of CH2Br2 in the 2960 to 3120 cm-1 region I. Sadiek, A. Hjältén, F. C. Roberts, J. H. Lehman, and A. Foltynowicz Phys. Chem. Chem. Phys. 25, 8743-8754 (2023)
2022 In situ determination of the penetration depth of mirrors in Fabry-Perot refractometers and its influence on assessment of refractivity and pressure I. Silander, J. Zakrisson, V. Silva de Oliveira, C. Forssén, A. Foltynowicz, T. Rubin, M. Zelan, and O. Axner Opt. Express 30, 25891-25906 (2022)
A methane line list with sub-MHz accuracy in the 1250 to 1380 cm-1 range from optical frequency comb Fourier transform spectroscopy M. Germann, A. Hjältén, V. Boudon, C. Richard, K. Krzempek, A. Hudzikowski, A. Głuszek, G. Soboń, and A. Foltynowicz JQSRT 288, 108252 (2022) Cavity-enhanced frequency comb Vernier spectroscopy (invited review) C. Lu, J. Morville, L. Rutkowski, F. Senna Vieira, and A. Foltynowicz Photonics 9, 222 (2022) https://www.mdpi.com/2304-6732/9/4/222/htm
2021 Robust, fast and sensitive near-infrared continuous-filtering Vernier spectrometer C. Lu, F. Senna Vieira, A. Głuszek, I. Silander, G. Sobon, and A. Foltynowicz Opt. Express 29, 30155-30167 (2021) www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-19-30155&id=458398
Optical frequency comb Fourier trasform spectroscopy of 14N216O at 7.8 µm A. Hjältén, M. Germann, K. Krzempek, A. Hudzikowski, A. Głuszek, D. Tomaszewska, G. Soboń, and A. Foltynowicz JQSRT 271, 107734 (2021) https://www.sciencedirect.com/science/article/pii/S0022407321002272
Dual-wavelength pumped highly birefringent microstructured silica fiber for widely tunable soliton self-frequency shift O. Szewczyk, P. Pala, K. Tarnowski, J. Olszewski, F. Senna Vieira, C. Lu, A. Foltynowicz, P. Mergo, J. Sotor, G. Soboń, and T. Martynkien IEEE J. Lightwave Technol. 39, 3260-3268 (2021) https://ieeexplore.ieee.org/document/9350157
Measurement and assignment of double-resonance transitions to the 8900-9100-cm-1 levels of methane A. Foltynowicz, L. Rutkowski, I. Silander, A. C. Johansson, V. Silva de Oliveira, O. Axner, G. Soboń, T. Martynkien, P. Mergo, and K. K. Lehmann Phys. Rev. A 103, 022810 (2021) journals.aps.org/pra/abstract/10.1103/PhysRevA.103.022810
Sub-Doppler double-resonance spectroscopy of methane using a frequency comb probe A. Foltynowicz, L. Rutkowski, I. Silander, A. C. Johansson, V. Silva de Oliveira, O. Axner, G. Soboń, T. Martynkien, P. Mergo, and K. K. Lehmann Phys. Rev. Lett. 126, 063001 (2021) https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.063001
2020 Line positions and intensities of the ν4 band of methyl iodide using mid-infrared optical frequency comb Fourier transform spectroscopy I. Sadiek, A. Hjältén, F. Senna Vieira, C. Lu, M. Stuhr, and A. Foltynowicz JQSRT 255, 107263 (2020) https://www.sciencedirect.com/science/article/pii/S0022407320305318
Compact mode-locked Er-doped fiber laser for broadband cavity-enhanced spectroscopy A. Głuszek, F. Senna Vieira, A. Hudzikowski, A. Wąż, J. Sotor, A. Foltynowicz, and G. Soboń Appl. Phys B 126, 137 (2020) https://link.springer.com/article/10.1007/s00340-020-07489-2
2019 Stabilized all-fiber source for generation of tunable broadband fCEO-free mid-IR frequency comb in the 7 – 9 µm range K. Krzempek, D. Tomaszewska, A. Głuszek, T. Martynkien, P. Mergo, J. Sotor, A. Foltynowicz, and G. Soboń Opt. Express 27, 37435 (2019) https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-26-37435
Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequeny comb A. C. Johansson, L. Rutkowski, A. Filipsson, T. Hausmaninger, G. Zhao, O. Axner, and A. Foltynowicz Opt. Express 26, 20633-20648 (2018) https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-16-20633
An experimental water line list at 1950 K in the 6250-6670 cm-1 region L. Rutkowski, A. Foltynowicz, F. M. Schmidt, A. C. Johansson, A. Khodabakhsh, A. A. Kyuberis, N. F. Zobov, O. L. Polyansky, S. N. Yurchenko, and J. Tennyson JQSRT 205, 213-219 (2018) https://www.sciencedirect.com/science/article/pii/S0022407317306660
Optical frequency comb Fourier transform spectroscopy with sub-nominal resolution and precision beyond the Voigt profile L. Rutkowski, P. Masłowski, A. C. Johansson, A. Khodabakhsh, and A. Foltynowicz JQSRT 204, 63-73 (2018) https://www.sciencedirect.com/science/article/pii/S0022407317300201
2017 Sensitive and broadband measurement of dispersion in a cavity using a Fourier transform spectrometer with kHz resolution L. Rutkowski, A. C. Johansson, G. Zhao, T. Hausmaninger, A. Khodabakhsh, O. Axner, and A. Foltynowicz Opt. Express 25, 21711 (2017) https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-18-21711
Mid-infrared continuous-filtering Vernier spectroscopy using a doubly resonant optical parametric oscillator A. Khodabakhsh, L. Rutkowski, J. Morville, and A. Foltynowicz Appl. Phys. B 123, 210 (2017) https://link.springer.com/article/10.1007/s00340-017-6781-0
High-power frequency comb source tunable from 2.7 to 4.2 µm based on difference frequency generation pumped by an Yb-doped fiber laser G. Soboń, T. Martynkien, P. Mergo, L. Rutkowski, and A. Foltynowicz Opt. Lett. 42, 1748-1751 (2017) https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-9-1748
2016 Detection of OH in an atmospheric flame at 1.5 µm using optical frequency comb spectroscopy L. Rutkowski, A. C. Johansson, D. Valiev, A. Khodabakhsh, A. Tkacz, F. M. Schmidt, and A. Foltynowicz Phot. Lett. Pol. 8, 110-112 (2016) http://photonics.pl/PLP/index.php/letters/article/view/8-40/462
Signal line shapes of Fourier transform cavity-enhanced frequency modulation spectroscopy with optical frequency combs A. C. Johansson, L. Rutkowski, A. Khodabakhsh, and A. Foltynowicz J. Opt. Soc. Am. B 34, 358-365 (2016) https://www.osapublishing.org/josab/abstract.cfm?uri=josab-34-2-358
Fourier transform and Vernier spectroscopy using an optical frequency comb at 3–5.4 µm A. Khodabakhsh, V. Ramaiah-Badala, L. Rutkowski, A. C. Johansson, K. F. Lee, J. Jiang, C. Mohr, M. E. Fermann, and A. Foltynowicz Opt. Lett. 41, 2541 (2016) https://www.osapublishing.org/ol/abstract.cfm?uri=ol-41-11-2541
Surpassing the path-limited resolution of a Fourier transform spectrometer with frequency combs P. Maslowski, K. F. Lee, A. C. Johansson, A. Khodabakhsh, G. Kowzan, L. Rutkowski, A. A. Mills, C. Mohr, J. Jiang, M. E. Fermann, and A. Foltynowicz Phys. Rev. A 93, 021802(R) (2016) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.93.021802
2015 Noise-immune cavity-enhanced optical frequency comb spectroscopy: a sensitive technique for high-resolution broadband molecular detection A. Khodabakhsh, A. C. Johansson, and A. Foltynowicz Appl. Phys. B 119, 87-95 (2015) https://link.springer.com/article/10.1007%2Fs00340-015-6010-7
Cavity-enhanced optical frequency comb spectroscopy of high-temperature H2O in a flame C. Abd Alrahman, A. Khodabakhsh, F. M. Schmidt, Z. Qu, and A. Foltynowicz Opt. Express 22 (11), 13889-13895 (2014) https://www.osapublishing.org/oe/abstract.cfm?uri=oe-22-11-13889