Mid-infrared supermirrors with finesse exceeding 400 000
Abstract For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical interference coatings in the visible and near-infrared (NIR) spectral regions have achieved total optical losses bel...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43367-z |
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| author | Gar-Wing Truong Lukas W. Perner D. Michelle Bailey Georg Winkler Seth B. Cataño-Lopez Valentin J. Wittwer Thomas Südmeyer Catherine Nguyen David Follman Adam J. Fleisher Oliver H. Heckl Garrett D. Cole |
| author_facet | Gar-Wing Truong Lukas W. Perner D. Michelle Bailey Georg Winkler Seth B. Cataño-Lopez Valentin J. Wittwer Thomas Südmeyer Catherine Nguyen David Follman Adam J. Fleisher Oliver H. Heckl Garrett D. Cole |
| author_sort | Gar-Wing Truong |
| collection | DOAJ |
| description | Abstract For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical interference coatings in the visible and near-infrared (NIR) spectral regions have achieved total optical losses below 2 parts per million (ppm), enabling a cavity finesse in excess of 1 million. However, such advancements have been lacking in the mid-infrared (MIR), despite substantial scientific interest. Here, we demonstrate a significant breakthrough in high-performance MIR mirrors, reporting substrate-transferred single-crystal interference coatings capable of cavity finesse values from 200 000 to 400 000 near 4.5 µm, with excess optical losses (scatter and absorption) below 5 ppm. In a first proof-of-concept demonstration, we achieve the lowest noise-equivalent absorption in a linear cavity ring-down spectrometer normalized by cavity length. This substantial improvement in performance will unlock a rich variety of MIR applications for atmospheric transport and environmental sciences, detection of fugitive emissions, process gas monitoring, breath-gas analysis, and verification of biogenic fuels and plastics. |
| format | Article |
| id | doaj-art-f3e66698d2ca4f60924e9d7d2a2aff7c |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-f3e66698d2ca4f60924e9d7d2a2aff7c2024-12-01T12:32:57ZengNature PortfolioNature Communications2041-17232023-12-011411810.1038/s41467-023-43367-zMid-infrared supermirrors with finesse exceeding 400 000Gar-Wing Truong0Lukas W. Perner1D. Michelle Bailey2Georg Winkler3Seth B. Cataño-Lopez4Valentin J. Wittwer5Thomas Südmeyer6Catherine Nguyen7David Follman8Adam J. Fleisher9Oliver H. Heckl10Garrett D. Cole11Thorlabs Crystalline SolutionsChristian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, Faculty Center for Nano Structure Research, Faculty of Physics, University of ViennaNational Institute of Standards and TechnologyChristian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, Faculty Center for Nano Structure Research, Faculty of Physics, University of ViennaThorlabs Crystalline SolutionsLaboratoire Temps-Fréquence, Institut de Physique, Université de NeuchâtelLaboratoire Temps-Fréquence, Institut de Physique, Université de NeuchâtelThorlabs Crystalline SolutionsThorlabs Crystalline SolutionsNational Institute of Standards and TechnologyChristian Doppler Laboratory for Mid-IR Spectroscopy and Semiconductor Optics, Faculty Center for Nano Structure Research, Faculty of Physics, University of ViennaThorlabs Crystalline SolutionsAbstract For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical interference coatings in the visible and near-infrared (NIR) spectral regions have achieved total optical losses below 2 parts per million (ppm), enabling a cavity finesse in excess of 1 million. However, such advancements have been lacking in the mid-infrared (MIR), despite substantial scientific interest. Here, we demonstrate a significant breakthrough in high-performance MIR mirrors, reporting substrate-transferred single-crystal interference coatings capable of cavity finesse values from 200 000 to 400 000 near 4.5 µm, with excess optical losses (scatter and absorption) below 5 ppm. In a first proof-of-concept demonstration, we achieve the lowest noise-equivalent absorption in a linear cavity ring-down spectrometer normalized by cavity length. This substantial improvement in performance will unlock a rich variety of MIR applications for atmospheric transport and environmental sciences, detection of fugitive emissions, process gas monitoring, breath-gas analysis, and verification of biogenic fuels and plastics.https://doi.org/10.1038/s41467-023-43367-z |
| spellingShingle | Gar-Wing Truong Lukas W. Perner D. Michelle Bailey Georg Winkler Seth B. Cataño-Lopez Valentin J. Wittwer Thomas Südmeyer Catherine Nguyen David Follman Adam J. Fleisher Oliver H. Heckl Garrett D. Cole Mid-infrared supermirrors with finesse exceeding 400 000 Nature Communications |
| title | Mid-infrared supermirrors with finesse exceeding 400 000 |
| title_full | Mid-infrared supermirrors with finesse exceeding 400 000 |
| title_fullStr | Mid-infrared supermirrors with finesse exceeding 400 000 |
| title_full_unstemmed | Mid-infrared supermirrors with finesse exceeding 400 000 |
| title_short | Mid-infrared supermirrors with finesse exceeding 400 000 |
| title_sort | mid infrared supermirrors with finesse exceeding 400 000 |
| url | https://doi.org/10.1038/s41467-023-43367-z |
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