Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range
Abstract Interferometric sensors, renowned for their exceptional accuracy, leverage the wave properties of coherent electromagnetic radiation. The periodicity of the measurement signal often critically limits the measurement range of sensors utilizing interferometry. Here we introduce a cavity-based...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | Communications Engineering |
| Online Access: | https://doi.org/10.1038/s44172-024-00164-w |
| _version_ | 1797276507353120768 |
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| author | Johannes Dickmann Liam Shelling Neto Steffen Sauer Stefanie Kroker |
| author_facet | Johannes Dickmann Liam Shelling Neto Steffen Sauer Stefanie Kroker |
| author_sort | Johannes Dickmann |
| collection | DOAJ |
| description | Abstract Interferometric sensors, renowned for their exceptional accuracy, leverage the wave properties of coherent electromagnetic radiation. The periodicity of the measurement signal often critically limits the measurement range of sensors utilizing interferometry. Here we introduce a cavity-based interferometry concept that capitalizes on a laser with moderate coherence, thereby combining ultra-high accuracy with ultra-high measurement bandwidth and range. To this end mid-fringe detection is combined with measurements of the interferometric visibility. We present experimental results that demonstrate the effectiveness of our approach exemplarily for length sensing. Notably, our system achieves an accuracy of 1 nm with a measurement range of 120 μm (relative uncertainty of 0.00083 %) and a bandwidth ranging from 0 Hz to 20 kHz. These findings support advancements in high-precision sensing applications that demand simultaneous accuracy, measurement range and bandwidth. |
| first_indexed | 2024-03-07T15:30:09Z |
| format | Article |
| id | doaj.art-e205e9f3d9804c2099539cbfcdb9bdc0 |
| institution | Directory Open Access Journal |
| issn | 2731-3395 |
| language | English |
| last_indexed | 2024-03-07T15:30:09Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Engineering |
| spelling | doaj.art-e205e9f3d9804c2099539cbfcdb9bdc02024-03-05T16:31:18ZengNature PortfolioCommunications Engineering2731-33952024-01-01311810.1038/s44172-024-00164-wModerate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and rangeJohannes Dickmann0Liam Shelling Neto1Steffen Sauer2Stefanie Kroker3CAVITY technologies UG (haftungsbeschränkt)CAVITY technologies UG (haftungsbeschränkt)CAVITY technologies UG (haftungsbeschränkt)Technical University of Braunschweig, Institute for Semiconductor TechnologyAbstract Interferometric sensors, renowned for their exceptional accuracy, leverage the wave properties of coherent electromagnetic radiation. The periodicity of the measurement signal often critically limits the measurement range of sensors utilizing interferometry. Here we introduce a cavity-based interferometry concept that capitalizes on a laser with moderate coherence, thereby combining ultra-high accuracy with ultra-high measurement bandwidth and range. To this end mid-fringe detection is combined with measurements of the interferometric visibility. We present experimental results that demonstrate the effectiveness of our approach exemplarily for length sensing. Notably, our system achieves an accuracy of 1 nm with a measurement range of 120 μm (relative uncertainty of 0.00083 %) and a bandwidth ranging from 0 Hz to 20 kHz. These findings support advancements in high-precision sensing applications that demand simultaneous accuracy, measurement range and bandwidth.https://doi.org/10.1038/s44172-024-00164-w |
| spellingShingle | Johannes Dickmann Liam Shelling Neto Steffen Sauer Stefanie Kroker Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range Communications Engineering |
| title | Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range |
| title_full | Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range |
| title_fullStr | Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range |
| title_full_unstemmed | Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range |
| title_short | Moderate-coherence sensing with optical cavities: ultra-high accuracy meets ultra-high measurement bandwidth and range |
| title_sort | moderate coherence sensing with optical cavities ultra high accuracy meets ultra high measurement bandwidth and range |
| url | https://doi.org/10.1038/s44172-024-00164-w |
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