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Foltynowicz, AleksandraORCID iD iconorcid.org/0000-0002-6191-7926
Alternative names
Publications (10 of 123) Show all publications
Rolla, D. T., Jaworski, P., Wu, D., Yu, F., Foltynowicz, A., Krzempek, K. & Sobon, G. (2024). Mid-infrared optical frequency comb spectroscopy using an all-silica antiresonant hollow-core fiber. Optics Express, 32(6), 10679-10689
Open this publication in new window or tab >>Mid-infrared optical frequency comb spectroscopy using an all-silica antiresonant hollow-core fiber
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2024 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 32, no 6, p. 10679-10689Article in journal (Refereed) Published
Abstract [en]

We present the first mid-infrared optical frequency comb spectrometer employing an absorption cell based on self-fabricated, all-silica antiresonant hollow-core fiber (ARHCF). The spectrometer is capable of measuring sub-mL sample volumes with 26 m interaction length and noise equivalent absorption sensitivity of 8.3 × 10−8 cm−1 Hz−1/2 per spectral element in the range of 2900 cm−1 to 3100 cm−1. Compared to a commercially available multipass cell, the ARHCF offers a similar interaction length in a 1000 times lower gas sample volume and a 2.8 dB lower transmission loss, resulting in better absorption sensitivity. The broad transmission windows of ARHCFs, in combination with a tunable optical frequency comb, make them ideal for multispecies detection, while the prospect of measuring samples in small volumes makes them a competitive technique to photoacoustic spectroscopy along with the robustness and prospect of coiling the ARHCFs open doors for miniaturization and out-of-laboratory applications.

Place, publisher, year, edition, pages
Optica Publishing Group, 2024
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-223068 (URN)10.1364/OE.517012 (DOI)2-s2.0-85187792371 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2020.0303Swedish Research Council, 2020-00238
Available from: 2024-04-18 Created: 2024-04-18 Last updated: 2024-04-18Bibliographically approved
Germann, M., Hjältén, A., Tennyson, J., Yurchenko, S. N., Gordon, I. E., Pett, C., . . . Foltynowicz, A. (2024). Optical frequency comb Fourier transform spectroscopy of formaldehyde in the 1250 to 1390 cm−1 range: experimental line list and improved MARVEL analysis. Journal of Quantitative Spectroscopy and Radiative Transfer, 312, Article ID 108782.
Open this publication in new window or tab >>Optical frequency comb Fourier transform spectroscopy of formaldehyde in the 1250 to 1390 cm−1 range: experimental line list and improved MARVEL analysis
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2024 (English)In: Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN 0022-4073, E-ISSN 1879-1352, Vol. 312, article id 108782Article in journal (Refereed) Published
Abstract [en]

We use optical frequency comb Fourier transform spectroscopy to record high-resolution, low-pressure, room-temperature spectra of formaldehyde (H212C16O) in the range of 1250 to 1390 cm−1. Through line-by-line fitting, we retrieve line positions and intensities of 747 rovibrational transitions: 558 from the ν6 band, 129 from the ν4 band, and 14 from the ν3 band, as well as 46 from four different hot bands. We incorporate the accurate and precise line positions (0.4 MHz median uncertainty) into the MARVEL (measured active vibration-rotation energy levels) analysis of the H2CO spectrum. This increases the number of MARVEL-predicted energy levels by 82 and of rovibrational transitions by 5382, and substantially reduces uncertainties of MARVEL-derived H2CO energy levels over a large range: from pure rotational levels below 200 cm−1 up to multiply excited vibrational levels at 6000 cm−1. This work is an important step toward filling the gaps in formaldehyde data in the HITRAN database.

Place, publisher, year, edition, pages
Elsevier, 2024
Keywords
Empirical line list, Formaldehyde, Fourier transform spectroscopy, Frequency comb spectroscopy, High-resolution spectroscopy, MARVEL
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-215854 (URN)10.1016/j.jqsrt.2023.108782 (DOI)2-s2.0-85174165539 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2015.0159Knut and Alice Wallenberg Foundation, KAW 2020.0303Swedish Research Council, 2016-03593Swedish Research Council, 2020-00238EU, Horizon 2020, 883830
Available from: 2023-11-02 Created: 2023-11-02 Last updated: 2023-11-10Bibliographically approved
Zakrisson, J., Silander, I., Silva de Oliveira, V., Hjältén, A., Rosina, A., Rubin, T., . . . Axner, O. (2024). Procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry. Optics Express, 32(3), 3959-3973
Open this publication in new window or tab >>Procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry
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2024 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 32, no 3, p. 3959-3973Article in journal (Refereed) Published
Abstract [en]

A procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry that does not require access to laser frequency measuring instrumentation is presented. It requires a previously well-characterized system regarding mirror phase shifts, Gouy phase, and mode number, and is based on the fact that the assessed refractivity should not change when mode jumps take place. It is demonstrated that the procedure is capable of assessing mode frequencies with an uncertainty of 30 MHz, which, when assessing pressure of nitrogen, corresponds to an uncertainty of 0.3 mPa.

National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-220868 (URN)10.1364/OE.513708 (DOI)38297605 (PubMedID)2-s2.0-85183822866 (Scopus ID)
Funder
Swedish Research Council, 2020-00238Swedish Research Council, 2020-05105Knut and Alice Wallenberg Foundation, 2020.0303Umeå University, IDS-18Vinnova, 2018-04570
Available from: 2024-02-19 Created: 2024-02-19 Last updated: 2024-02-19Bibliographically approved
Silva de Oliveira, V., Silander, I., Rutkowski, L., Soboń, G., Axner, O., Lehmann, K. K. & Foltynowicz, A. (2024). Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe. Nature Communications, 15(1), Article ID 161.
Open this publication in new window or tab >>Sub-Doppler optical-optical double-resonance spectroscopy using a cavity-enhanced frequency comb probe
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2024 (English)In: Nature Communications, E-ISSN 2041-1723, Vol. 15, no 1, article id 161Article in journal (Refereed) Published
Abstract [en]

Accurate parameters of molecular hot-band transitions, i.e., those starting from vibrationally excited levels, are needed to accurately model high-temperature spectra in astrophysics and combustion, yet laboratory spectra measured at high temperatures are often unresolved and difficult to assign. Optical-optical double-resonance (OODR) spectroscopy allows the measurement and assignment of individual hot-band transitions from selectively pumped energy levels without the need to heat the sample. However, previous demonstrations lacked either sufficient resolution, spectral coverage, absorption sensitivity, or frequency accuracy. Here we demonstrate OODR spectroscopy using a cavity-enhanced frequency comb probe that combines all these advantages. We detect and assign sub-Doppler transitions in the spectral range of the 3ν3 ← ν3 resonance of methane with frequency precision and sensitivity more than an order of magnitude better than before. This technique will provide high-accuracy data about excited states of a wide range of molecules that is urgently needed for theoretical modeling of high-temperature data and cannot be obtained using other methods.

Place, publisher, year, edition, pages
Springer Nature, 2024
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-219329 (URN)10.1038/s41467-023-44417-2 (DOI)38167498 (PubMedID)2-s2.0-85181230228 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2015.0159Knut and Alice Wallenberg Foundation, KAW 2020.0303Swedish Research Council, 2020-00238The Kempe Foundations, JCK 1317.1
Available from: 2024-01-12 Created: 2024-01-12 Last updated: 2024-01-12Bibliographically approved
Hjältén, A., Silva de Oliveira, V., Silander, I., Rosina, A., Rutkowski, L., Sobon, G., . . . Foltynowicz, A. (2023). Accurate measurement and assignment of high rotational energy levels of the 3v3 ← v3 band of methane. In: 2023 conference on lasers and electro-optics, CLEO 2023: . Paper presented at 2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, May 7-12, 2023. IEEE, Article ID STh4L.4.
Open this publication in new window or tab >>Accurate measurement and assignment of high rotational energy levels of the 3v3 ← v3 band of methane
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2023 (English)In: 2023 conference on lasers and electro-optics, CLEO 2023, IEEE, 2023, article id STh4L.4Conference paper, Published paper (Refereed)
Abstract [en]

We use optical-optical double-resonance spectroscopy with a high-power continuous wave pump and a cavity-enhanced comb probe to expand sub-Doppler measurements of the 3v3 ← v3 band of CH4 to higher rotational levels. We assign the final states using combination differences, i.e., by reaching the same state using different pump/probe combinations.

Place, publisher, year, edition, pages
IEEE, 2023
Series
Quantum Electronics and Laser Science, ISSN 2160-8989
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-217340 (URN)2-s2.0-85176362960 (Scopus ID)9781957171258 (ISBN)9781665455688 (ISBN)
Conference
2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, May 7-12, 2023
Available from: 2023-12-04 Created: 2023-12-04 Last updated: 2023-12-04Bibliographically approved
Germann, M., Hjältén, A., Boudon, V., Richard, C., Tennyson, J., Yurchenko, S., . . . Foltynowicz, A. (2023). High accuracy line lists of CH4 and H2CO in the 8 µm range from optical frequency comb fourier transform spectroscopy. In: 2023 conference on lasers and electro-optics Europe & European quantum electronics conference (CLEO/Europe-EQEC): . Paper presented at 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, June 26-30, 2023. IEEE, Article ID 10232703.
Open this publication in new window or tab >>High accuracy line lists of CH4 and H2CO in the 8 µm range from optical frequency comb fourier transform spectroscopy
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2023 (English)In: 2023 conference on lasers and electro-optics Europe & European quantum electronics conference (CLEO/Europe-EQEC), IEEE, 2023, article id 10232703Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
IEEE, 2023
Series
Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference, ISSN 2639-5452, E-ISSN 2833-1052
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-216799 (URN)10.1109/CLEO/EUROPE-EQEC57999.2023.10232703 (DOI)2-s2.0-85175718241 (Scopus ID)9798350345995 (ISBN)9798350346008 (ISBN)
Conference
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, June 26-30, 2023
Funder
Knut and Alice Wallenberg Foundation, 2015.0159Knut and Alice Wallenberg Foundation, 2020.0303Swedish Research Council, 2016-03593EU, European Research Council, 883830
Available from: 2023-11-21 Created: 2023-11-21 Last updated: 2023-11-21Bibliographically approved
Sadiek, I., Hjältén, A. & Foltynowicz, A. (2023). Line positions and intensities of 12CH3I around 2971 cm-1 from frequency comb fourier transform spectroscopy. In: CLEO 2023: Proceedings. Paper presented at 2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, USA, May 7-12, 2023. Optical Society of America, Article ID JTh2A.100.
Open this publication in new window or tab >>Line positions and intensities of 12CH3I around 2971 cm-1 from frequency comb fourier transform spectroscopy
2023 (English)In: CLEO 2023: Proceedings, Optical Society of America, 2023, article id JTh2A.100Conference paper, Published paper (Refereed)
Abstract [en]

We use the high-resolution spectrum of 12CH3I measured using a comb-based Fourier transform spectrometer to extend line assignments to the 2971 cm-1 region and introduce line positions and intensities of the V1 and v3+v1-v3 bands.

Place, publisher, year, edition, pages
Optical Society of America, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-216869 (URN)10.1364/CLEO_AT.2023.JTh2A.100 (DOI)2-s2.0-85176309023 (Scopus ID)9781957171258 (ISBN)
Conference
2023 Conference on Lasers and Electro-Optics, CLEO 2023, San Jose, USA, May 7-12, 2023
Available from: 2023-12-12 Created: 2023-12-12 Last updated: 2023-12-12Bibliographically approved
Hjältén, A., Foltynowicz, A. & Sadiek, I. (2023). Line positions and intensities of the ν1 band of 12CH3I using mid-infrared optical frequency comb Fourier transform spectroscopy. Journal of Quantitative Spectroscopy and Radiative Transfer, 306, Article ID 108646.
Open this publication in new window or tab >>Line positions and intensities of the ν1 band of 12CH3I using mid-infrared optical frequency comb Fourier transform spectroscopy
2023 (English)In: Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN 0022-4073, E-ISSN 1879-1352, Vol. 306, article id 108646Article in journal (Refereed) Published
Abstract [en]

We present a new spectral analysis of the ν1 and ν3+ν1−ν3 bands of 12CH3I around 2971 cm−1 based on a high-resolution spectrum spanning from 2800 cm–1 to 3160 cm–1, measured using an optical frequency comb Fourier transform spectrometer. From this spectrum, we previously assigned the ν4 and ν3+ν4−ν3 bands around 3060 cm–1 using PGOPHER, and the line list was incorporated in the HITRAN database. Here, we treat the two fundamental bands, ν1 and ν4, together with the perturbing states, 2ν2+ν3 and ν2+2ν6±2, as a four-level system connected via Coriolis and Fermi interactions. A similar four-level system is assumed to connect the two ν3+ν1−ν3 and ν3+ν4−ν3 hot bands, which appear due to the population of the low-lying ν3 state at room temperature, with the 2ν2+2ν3 and ν2+ν3+2ν6±2 perturbing states. This spectroscopic treatment provides a good global agreement of the simulated spectra with experiment, and hence accurate line lists and band parameters of the four connected vibrational states in each system. It also allows revisiting the analysis of the ν4 and ν3+ν4−ν3 bands, which were previously treated as separate bands, not connected to their ν1 and ν3+ν1−ν3 counterparts. Overall, we assign 4665 transitions in the fundamental band system, with an average error of 0.00071 cm–1, a factor of two better than earlier work on the ν1 band using conventional Fourier transform infrared spectroscopy. The ν1 band shows hyperfine splitting, resolvable for transitions with J ≤ 2 × K. Finally, the spectral intensities of 65 lines of the ν1 band and 7 lines of the ν3+ν1−ν3 band are reported for the first time using the Voigt line shape as a model in multispectral fitting. The reported line lists and intensities will serve as a reference for high-resolution molecular spectroscopic databases, and as a basis for line selection in future monitoring applications of CH3I.

Place, publisher, year, edition, pages
Elsevier, 2023
National Category
Atom and Molecular Physics and Optics Condensed Matter Physics
Identifiers
urn:nbn:se:umu:diva-209110 (URN)10.1016/j.jqsrt.2023.108646 (DOI)001007953500001 ()2-s2.0-85159161690 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, 2015.0159Knut and Alice Wallenberg Foundation, 2020.0303Swedish Research Council, 2016-03593Swedish Research Council, 2020-00238
Available from: 2023-06-08 Created: 2023-06-08 Last updated: 2023-11-13Bibliographically approved
Tomaszewska-Rolla, D., Jaworski, P., Wu, D., Yu, F., Foltynowicz, A., Soboń, G. & Krzempek, K. (2023). Mid-IR optical frequency comb Fourier transform spectroscopy using an antiresonant hollow-core fiber. In: 2023 conference on lasers and electro-optics Europe & European quantum electronics conference (CLEO/Europe-EQEC): . Paper presented at 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, June 26-30, 2023. IEEE, Article ID 10232148.
Open this publication in new window or tab >>Mid-IR optical frequency comb Fourier transform spectroscopy using an antiresonant hollow-core fiber
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2023 (English)In: 2023 conference on lasers and electro-optics Europe & European quantum electronics conference (CLEO/Europe-EQEC), IEEE, 2023, article id 10232148Conference paper, Published paper (Refereed)
Abstract [en]

Optical frequency combs (OFCs) enable high resolution, sensitivity, and speed in spectroscopic measurements. An efficient way of generating an optical frequency comb in the mid-infrared (mid-IR) is the difference frequency generation (DFG) process, which involves the interaction of two input waves in a non-linear crystal, resulting in the generation of a third wave with a frequency that is the difference in frequency of the two input beams [1]. The classical way of extending the path of light-gas interaction in spectroscopic measurements, thus increasing the sensitivity, is to use multi-pass cells (MPC). However, MPCs have disadvantages related to the difficulty of aligning laser light into the cell or optical fringes. An alternative approach is to use the so-called antiresonant hollow-core fibres (ARHCF) [2]. ARHCFs are characterized by a wide low-loss transmission range in the mid-IR, high quality of the delivered beam, and their air core can be filled with the target gas sample, which makes them well suited for laser-based gas sensing.

Place, publisher, year, edition, pages
IEEE, 2023
Series
Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference, ISSN 2833-1052, E-ISSN 2639-5452
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-216796 (URN)10.1109/CLEO/EUROPE-EQEC57999.2023.10232148 (DOI)2-s2.0-85175712591 (Scopus ID)9798350345995 (ISBN)9798350346008 (ISBN)
Conference
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, June 26-30, 2023
Funder
Knut and Alice Wallenberg Foundation, KAW 2020.0303
Available from: 2023-11-21 Created: 2023-11-21 Last updated: 2023-11-21Bibliographically approved
Sadiek, I., Hjältén, A., Roberts, F. C., Lehman, J. H. & Foltynowicz, A. (2023). Optical frequency comb-based measurements and the revisited assignment of high-resolution spectra of CH2Br2 in the 2960 to 3120 cm−1 region. Physical Chemistry, Chemical Physics - PCCP, 25, Article ID 8743.
Open this publication in new window or tab >>Optical frequency comb-based measurements and the revisited assignment of high-resolution spectra of CH2Br2 in the 2960 to 3120 cm−1 region
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2023 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 25, article id 8743Article in journal (Refereed) Published
Abstract [en]

Brominated organic compounds are toxic ocean-derived trace gases that affect the oxidation capacity of the atmosphere and contribute to its bromine burden. Quantitative spectroscopic detection of these gases is limited by the lack of accurate absorption cross-section data as well as rigorous spectroscopic models. This work presents measurements of high-resolution spectra of dibromomethane, CH2Br2, from 2960 cm−1 to 3120 cm−1 by two optical frequency comb-based methods, Fourier transform spectroscopy and a spatially dispersive method based on a virtually imaged phased array. The integrated absorption cross-sections measured using the two spectrometers are in excellent agreement with each other within 4%. A revisited rovibrational assignment of the measured spectra is introduced, in which the progressions of features are attributed to hot bands rather than different isotopologues as was previously done. Overall, twelve vibrational transitions, four for each of the three isotopologues CH281Br2, CH279Br81Br, and CH279Br2, are assigned. These four vibrational transitions are attributed to the fundamental ν6 band and the nearby nν4 + ν6 − nν4 hot bands (with n = 1–3) due to the population of the low-lying ν4 mode of the Br–C–Br bending vibration at room temperature. The new simulations show very good agreement in intensities with the experiment as predicted by the Boltzmann distribution factor. The spectra of the fundamental and the hot bands show progressions of strong QKa(J) rovibrational sub-clusters. The band heads of these sub-clusters are assigned and fitted to the measured spectra, providing accurate band origins and the rotational constants for the twelve states with an average error of 0.0084 cm−1. A detailed fit of the ν6 band of the CH279Br81Br isotopologue is commenced after assigning 1808 partially resolved rovibrational lines, with the band origin, rotational, and centrifugal constants as fit parameters, resulting in an average error of 0.0011 cm−1.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2023
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-206029 (URN)10.1039/d2cp05881b (DOI)000946509500001 ()2-s2.0-85150414323 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, 2015.0159Knut and Alice Wallenberg Foundation, 2020.0303Swedish Research Council, 2016-03593Swedish Research Council, 2020-00238Swedish Research Council, 2018-05973Swedish National Infrastructure for Computing (SNIC)
Available from: 2023-03-28 Created: 2023-03-28 Last updated: 2023-11-10Bibliographically approved
Projects
Anmälan om utnyttjande av återvändarbidrag för beviljade postdoktorstipendier [2012-00069_VR]; Umeå UniversityCavity-enhanced optical frequency comb spectroscopy - A technique for sensitive simultaneous detection of molecules in gas phase. [2012-03650_VR]; Umeå UniversityPrecision Fourier Transform Spectroscopy with Optical Frequency Combs [2016-03593_VR]; Umeå University
Organisations
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ORCID iD: ORCID iD iconorcid.org/0000-0002-6191-7926

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