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Vieira, Francisco Senna
Publications (10 of 16) Show all publications
Lu, C., Morville, J., Rutkowski, L., Vieira, F. S. & Foltynowicz, A. (2022). Cavity-Enhanced Frequency Comb Vernier Spectroscopy. Photonics, 9(4), Article ID 222.
Open this publication in new window or tab >>Cavity-Enhanced Frequency Comb Vernier Spectroscopy
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2022 (English)In: Photonics, ISSN 2304-6732, Vol. 9, no 4, article id 222Article, review/survey (Refereed) Published
Abstract [en]

Vernier spectroscopy is a frequency comb-based technique employing optical cavities for filtering of the comb and for enhancement of the interaction length with the sample. Depending on the ratio of the cavity free spectral range and the comb repetition rate, the cavity transmits either widely spaced individual comb lines (comb-resolved Vernier spectroscopy) or groups of comb lines, called Vernier orders (continuous-filtering Vernier spectroscopy, CF-VS). The cavity filtering enables the use of low-resolution spectrometers to resolve the individual comb lines or Vernier orders. Vernier spectroscopy has been implemented using various near- and mid-infrared comb sources for applications ranging from trace gas detection to precision spectroscopy. Here, we present the principles of the technique and provide a review of previous demonstrations of comb-resolved and continuous-filtering Vernier spectroscopy. We also demonstrate two new implementations of CF-VS: one in the mid-infrared, based on a difference frequency generation comb source, with a new and more robust detection system design, and the other in the near-infrared, based on a Ti:sapphire laser, reaching high sensitivity and the fundamental resolution limit of the technique.

Place, publisher, year, edition, pages
MDPI, 2022
Keywords
Vernier spectroscopy, frequency comb spectroscopy, cavity enhanced spectroscopy, trace gas detection, precision spectroscopy
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
urn:nbn:se:umu:diva-192696 (URN)10.3390/photonics9040222 (DOI)000786153900001 ()2-s2.0-85128015117 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2015.0159
Note

Originally included in thesis in manuscript form.

Available from: 2022-02-22 Created: 2022-02-22 Last updated: 2023-03-24Bibliographically approved
Szewczyk, O., Pala, P., Tarnowski, K. L., Olszewski, J., Lu, C., Foltynowicz, A., . . . Martynkien, T. (2021). Dual-wavelength pumped highly birefringent microstructured silica fiber for widely tunable soliton self-frequency shift. Journal of Lightwave Technology, 39(10), 3260-3268
Open this publication in new window or tab >>Dual-wavelength pumped highly birefringent microstructured silica fiber for widely tunable soliton self-frequency shift
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2021 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 39, no 10, p. 3260-3268Article in journal (Refereed) Published
Abstract [en]

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: 1.04 μm and 1.55 μm. Depending on the pump source, the output spectrum can be continuously tuned up to 1.67 μm (pump at 1.04 μm) or 1.95 μm (pump at 1.55 μm) in the same 1.5 m-long fiber sample, with pump-to-soliton conversion efficiency higher than 20%. The fiber is highly birefringent, which results in an excellent polarization extinction ratio of the soliton, reaching 26 dB. The shifted solitons have a high degree of coherence confirmed by pulse-to-pulse interference measurement. The available soliton tuning range covers the wavelengths inaccessible for fiber lasers, e.g., 1.3 μm and 1.7 μm, highly important for multi-photon microscopy and imaging. Our work shows that it is possible to design and fabricate one universal optical fiber that supports soliton shift when pumped at two different wavelengths separated by over 500 nm.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2021
Keywords
Chromatic dispersion, Fiber lasers, Fiber nonlinear optics, Laser excitation, Optical fiber dispersion, Optical fiber polarization, Optical fibers, optical solitons, optical wavelength conversion, Solitons
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-181540 (URN)10.1109/JLT.2021.3057657 (DOI)000648335500028 ()2-s2.0-85101429745 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2015.0159
Available from: 2021-03-31 Created: 2021-03-31 Last updated: 2022-02-23Bibliographically approved
Hjältén, A., Germann, M., Sadiek, I., Lu, C., Vieira, F. S., Krzempek, K., . . . Foltynowicz, A. (2021). Fourier transform spectroscopy using difference frequency generation comb sources at 3.3 µm and 7.8 µm. In: Proceedings OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES): . Paper presented at Applied Industrial Spectroscopy, AIS 2021 - Part of Optical Sensors and Sensing Congress 2021, Washington - USA / Virtual, July 19-23, 2021. Optical Society of America, Article ID JTu4D.3.
Open this publication in new window or tab >>Fourier transform spectroscopy using difference frequency generation comb sources at 3.3 µm and 7.8 µm
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2021 (English)In: Proceedings OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), Optical Society of America, 2021, article id JTu4D.3Conference paper, Published paper (Refereed)
Abstract [en]

We use offset-frequency-free difference frequency generation comb sources and a Fourier transform spectrometer with comb-mode-width limited resolution to measure and analyze spectra of molecular species of atmospheric relevance: CH3I and CH2Br2 around 3000 cm-1, and 14N216O around 1280 cm-1

Place, publisher, year, edition, pages
Optical Society of America, 2021
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-189943 (URN)10.1364/AIS.2021.JTu4D.3 (DOI)2-s2.0-85119360459 (Scopus ID)9781557528209 (ISBN)
Conference
Applied Industrial Spectroscopy, AIS 2021 - Part of Optical Sensors and Sensing Congress 2021, Washington - USA / Virtual, July 19-23, 2021
Funder
Knut and Alice Wallenberg Foundation, 2015.0159Swedish Research Council, 2016-03593
Available from: 2021-11-29 Created: 2021-11-29 Last updated: 2021-11-29Bibliographically approved
Hjältén, A., Sadiek, I., Lu, C., Vieira, F. S., Stuhr, M., Germann, M. & Foltynowicz, A. (2021). High-Resolution Measurements of Halogenated Volatile Organic Compounds Using Frequency Comb Fourier Transform Spectroscopy. In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021: . Paper presented at 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, Germany, 21-25 June 2021.. IEEE Lasers and Electro-Optics Society
Open this publication in new window or tab >>High-Resolution Measurements of Halogenated Volatile Organic Compounds Using Frequency Comb Fourier Transform Spectroscopy
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2021 (English)In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, IEEE Lasers and Electro-Optics Society, 2021Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Halogenated volatile organic compounds (HVOCs) play an important role in the photo-chemistry of the atmosphere, for example in ozone depletion [1]. They are produced naturally in the oceans but are also used in industrial and agricultural applications where they may pose a health-hazard due to their biological effects. Optical detection of these compounds would hence be of great value in, for example, atmospheric monitoring and leak detection in workplaces. Crucial for such detection schemes is access to accurate spectroscopic models, which in turn require high-precision laboratory measurements. Due to the combination of broad spectral coverage and high resolution, optical frequency comb Fourier transform spectroscopy is an excellent tool for providing the necessary spectroscopic data. We use a mid-infrared frequency comb and a Fourier transform spectrometer (FTS) to measure and assign high-resolution spectra of multiple absorption bands of two HVOCs: methyl iodide, CH 3 I [2] , and dibromomethane, CH 2 Br 2 , around 3.3m.

Place, publisher, year, edition, pages
IEEE Lasers and Electro-Optics Society, 2021
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-189084 (URN)10.1109/CLEO/Europe-EQEC52157.2021.9541981 (DOI)000728078300380 ()2-s2.0-85117569145 (Scopus ID)9781665418768 (ISBN)
Conference
2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, Germany, 21-25 June 2021.
Available from: 2021-11-04 Created: 2021-11-04 Last updated: 2023-09-05Bibliographically approved
Lu, C., Vieira, F. S., Gluszek, A., Silander, I., Sobon, G. & Foltynowicz, A. (2021). Robust and High-Speed Cavity-Enhanced Vernier Spectrometer. In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021: . Paper presented at 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, 21-25 June, 2021.. IEEE Lasers and Electro-Optics Society, Article ID ch_10_5.
Open this publication in new window or tab >>Robust and High-Speed Cavity-Enhanced Vernier Spectrometer
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2021 (English)In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, IEEE Lasers and Electro-Optics Society, 2021, article id ch_10_5Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Sensitive in situ detection of multiple atmospheric species at fast acquisition rates is needed for environmental monitoring. For field applications, robust and compact design is also demanded. Continuous-filtering Vernier spectroscopy (CF-VS) [1] is a cavity-enhanced frequency-comb-based technique that provides broad spectral bandwidth and high absorption sensitivity in short acquisition times. In CF-VS, groups of comb lines (Vernier orders, VOs) are transmitted through the cavity when its free spectral range (FSR) is slightly detuned from the comb repetition rate ( f rep ) and continuously swept across the broadband laser spectrum (by scanning the FSR). In previous implementations [1] - [3] , a diffraction grating rotating on a galvo scanner was used to image one VO on the detector during the spectral scan, limiting the acquisition rates to 20 Hz. Moreover, high-bandwidth stabilization was needed to synchronize the scans of the galvo and the cavity FSR. Here we present an improved design of CF-VS based on a compact Er:fiber laser and a moving aperture that follows and selects one VO. This removes the requirement of tight active stabilization and enables faster acquisition rates.

Place, publisher, year, edition, pages
IEEE Lasers and Electro-Optics Society, 2021
Series
Optics InfoBase conference papers, ISSN 2162-2701
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-189076 (URN)10.1109/CLEO/Europe-EQEC52157.2021.9542520 (DOI)000728078300864 ()2-s2.0-85117619074 (Scopus ID)9781665418768 (ISBN)
Conference
2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, 21-25 June, 2021.
Note

Also part of Optics InfoBase Conference Papers series, published by the Optical Society.

Available from: 2021-11-09 Created: 2021-11-09 Last updated: 2023-09-05Bibliographically approved
Lu, C., Vieira, F. S., Głuszek, A., Silander, I., Sobon, G. & Foltynowicz, A. (2021). Robust, fast and sensitive near-infrared continuous-filtering Vernier spectrometer. Optics Express, 29(19), 30155-30167
Open this publication in new window or tab >>Robust, fast and sensitive near-infrared continuous-filtering Vernier spectrometer
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2021 (English)In: Optics Express, E-ISSN 1094-4087, Vol. 29, no 19, p. 30155-30167Article in journal (Refereed) Published
Abstract [en]

We present a new design of a robust cavity-enhanced frequency comb-based spectrometer operating under the continuous-filtering Vernier principle. The spectrometer is based on a compact femtosecond Er-doped fiber laser, a medium finesse cavity, a diffraction grating, a custom-made moving aperture, and two photodetectors. The new design removes the requirement for high-bandwidth active stabilization present in the previous implementations of the technique, and allows scan rates up to 100 Hz. We demonstrate the spectrometer performance over a wide spectral range by detecting CO2 around 1575 nm (1.7 THz bandwidth and 6 GHz resolution) and CH4 around 1650 nm (2.7 THz bandwidth and 13 GHz resolution). We achieve absorption sensitivity of 5 × 10−9 cm-1 Hz-1/2 at 1575 nm, and 1 × 10−7 cm-1 Hz-1/2 cm-1 at 1650 nm. We discuss the influence of the scanning speed above the adiabatic limit on the amplitude of the absorption signal.

Place, publisher, year, edition, pages
The Optical Society, 2021
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-187697 (URN)10.1364/OE.435576 (DOI)000695619200045 ()2-s2.0-85114273417 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW 2015.0159
Available from: 2021-09-23 Created: 2021-09-23 Last updated: 2022-09-15Bibliographically approved
Gluszek, A., Vieira, F. S., Hudzikowski, A., Waz, A., Sotor, J., Foltynowicz, A. & Sobon, G. (2020). Compact mode-locked Er-doped fiber laser for broadband cavity-enhanced spectroscopy. Applied physics. B, Lasers and optics (Print), 126(8), Article ID 137.
Open this publication in new window or tab >>Compact mode-locked Er-doped fiber laser for broadband cavity-enhanced spectroscopy
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2020 (English)In: Applied physics. B, Lasers and optics (Print), ISSN 0946-2171, E-ISSN 1432-0649, Vol. 126, no 8, article id 137Article in journal (Refereed) Published
Abstract [en]

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-locked polarization maintaining oscillator consumes less than 5 W of power. It is thermally stabilized, enclosed in a 3D printed box, and equipped with three actuators that control the repetition rate: fast and slow fiber stretchers, and metal-coated fiber section. This allows wide tuning of the repetition rate and its stabilization to an external reference source. The applicability of the laser to molecular spectroscopy is demonstrated by detecting CO(2)in air using continuous-filtering Vernier spectroscopy with absorption sensitivity of 5.5 x 10(-8)cm(-1)in 50 ms.

Place, publisher, year, edition, pages
Springer, 2020
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-174462 (URN)10.1007/s00340-020-07489-2 (DOI)000555951800001 ()2-s2.0-85088392821 (Scopus ID)
Available from: 2020-08-26 Created: 2020-08-26 Last updated: 2023-03-24Bibliographically approved
Vieira, F. S., Lu, C., Silander, I., Głuszek, A., Soboń, G. & Foltynowicz, A. (2020). Continuous-filtering Vernier spectrometer with improved design and performance. In: Optics InfoBase Conference Papers: . Paper presented at Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2020 - Part of Optical Sensors and Sensing Congress 2020, Washington, DC, USA, October 13-16, 2020. The Optical Society, Article ID LTu3C.5.
Open this publication in new window or tab >>Continuous-filtering Vernier spectrometer with improved design and performance
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2020 (English)In: Optics InfoBase Conference Papers, The Optical Society , 2020, article id LTu3C.5Conference paper, Published paper (Refereed)
Abstract [en]

We present a robust cavity-enhanced comb-based spectrometer with a 6.6 GHz resolution and 60 Hz acquisition rate, based on the continuous-filtering Vernier principle, a fixed diffraction grating, a custom-made chopper wheel, and a low-bandwidth comb-cavity stabilization scheme. We measure a CO2 spectrum with 5 x 10-8 cm-1 sensitivity in 17 ms.

Place, publisher, year, edition, pages
The Optical Society, 2020
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-189629 (URN)10.1364/LACSEA.2020.LTu3C.5 (DOI)2-s2.0-85118731837 (Scopus ID)9781557528209 (ISBN)
Conference
Laser Applications to Chemical, Security and Environmental Analysis, LACSEA 2020 - Part of Optical Sensors and Sensing Congress 2020, Washington, DC, USA, October 13-16, 2020
Available from: 2021-11-17 Created: 2021-11-17 Last updated: 2021-11-17Bibliographically approved
Sadiek, I., Hjältén, A., Vieira, F. S., Lu, C., Stuhr, M. & Foltynowicz, A. (2020). Line positions and intensities of the ν4 band of methyl iodide using mid-infrared optical frequency comb Fourier transform spectroscopy. Journal of Quantitative Spectroscopy and Radiative Transfer, 255, Article ID 107263.
Open this publication in new window or tab >>Line positions and intensities of the ν4 band of methyl iodide using mid-infrared optical frequency comb Fourier transform spectroscopy
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2020 (English)In: Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN 0022-4073, E-ISSN 1879-1352, Vol. 255, article id 107263Article in journal (Refereed) Published
Abstract [en]

We use optical frequency comb Fourier transform spectroscopy to measure high-resolution spectra of iodomethane, CH3I, in the C-H stretch region from 2800 to 3160 cm(-1). The fast-scanning Fourier transform spectrometer with auto-balanced detection is based on a difference frequency generation comb with repetition rate, f(rep), of 125 MHz. A series of spectra with sample point spacing equal to f rep are measured at different f rep settings and interleaved to yield sampling point spacing of 11 MHz. Iodomethane is introduced into a 76 m long multipass absorption cell by its vapor pressure at room temperature. The measured spectrum contains three main ro-vibrational features: the parallel vibrational overtone and combination bands centered around 2850 cm(-1), the symmetric stretch nu(1) band centered at 2971 cm(-1), and the asymmetric stretch nu(4) band centered at 3060 cm(-1). The spectra of the nu(4) band and the nearby nu(3)+nu(4)-nu(3) hot band are simulated using PGOPHER and a new assignment of these bands is presented. The resolved ro-vibrational structures are used in a least square fit together with the microwave data to provide the upper state parameters. We assign 2603 transitions to the nu(4) band with a standard deviation (observed - calculated) of 0.00034 cm(-1), and 831 transitions to the nu(3)+nu(4)-nu(3) hot band with a standard deviation of 0.00084 cm(-1). For comparison, in the earlier work using standard FT-IR with 162 MHz resolution [Anttila, et al., J. Mol. Spectrosc. 1986; 119:190-200] 1830 transition were assigned to the nu(4) band, and 380 transitions to the nu(3)+nu(4)-nu(3) hot band, with standard deviations of 0.00083 cm(-1) and 0.0013 cm(-1), respectively. The hyperfine splittings due to the 127 I nuclear quadrupole moment are observed for transitions with J <= 2 x K. Finally, intensities of 157 isolated transitions in the nu(4) band are reported for the first time using the Voigt line shape as a model in multispectral fitting.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
Methyl iodide, High-resolution spectroscopy, Optical frequency comb, Fourier transform spectroscopy
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-176794 (URN)10.1016/j.jqsrt.2020.107263 (DOI)000581971300031 ()2-s2.0-85090048420 (Scopus ID)
Available from: 2020-11-25 Created: 2020-11-25 Last updated: 2023-11-10Bibliographically approved
Sadiek, I., Hjältén, A., Stuhr, M., Lu, C., Vieira, F. S. & Foltynowicz, A. (2020). Mid-infrared comb-based fourier transform spectroscopy of halogenated volatile organic compounds. In: 2020 Conference on Lasers and Electro-Optics (CLEO): . Paper presented at Conference on Lasers and Electro-Optics (CLEO), MAY 10-15, 2020, San Jose, CA, USA. IEEE, Article ID 9192281.
Open this publication in new window or tab >>Mid-infrared comb-based fourier transform spectroscopy of halogenated volatile organic compounds
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2020 (English)In: 2020 Conference on Lasers and Electro-Optics (CLEO), IEEE, 2020, article id 9192281Conference paper, Published paper (Refereed)
Abstract [en]

Broadband high-resolution spectra of two key atmospheric species, methyl iodide (CH3I) and dibromomethane (CH2Br2), are measured around 3 µm using a comb-based Fourier transform spectrometer and assigned with the help of the semi-automatic fitting in PGOPHER. 

Place, publisher, year, edition, pages
IEEE, 2020
Series
Conference on Lasers and Electro-Optics, ISSN 2160-9020
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:umu:diva-187149 (URN)000612090000306 ()2-s2.0-85091674362 (Scopus ID)978-1-943580-76-7 (ISBN)978-1-7281-4418-4 (ISBN)
Conference
Conference on Lasers and Electro-Optics (CLEO), MAY 10-15, 2020, San Jose, CA, USA
Funder
Swedish Research Council, 2016-03593Knut and Alice Wallenberg Foundation, KAW 2015.0159
Note

Also published in Optics InfoBase Conference Papers, ISSN: 2162-2701.

Available from: 2021-09-13 Created: 2021-09-13 Last updated: 2023-09-04Bibliographically approved
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