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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2301.01386 |
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| _version_ | 1866916314317062144 |
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| author | Di Virgilio, Angela D. V. Bajardi, Francesco Basti, Andrea Beverini, Nicolò Carelli, Giorgio Ciampini, Donatella Di Somma, Giuseppe Fuso, Francesco Maccioni, Enrico Marsili, Paolo Ortolan, Antonello Porzio, Alberto Vitali, David |
| author_facet | Di Virgilio, Angela D. V. Bajardi, Francesco Basti, Andrea Beverini, Nicolò Carelli, Giorgio Ciampini, Donatella Di Somma, Giuseppe Fuso, Francesco Maccioni, Enrico Marsili, Paolo Ortolan, Antonello Porzio, Alberto Vitali, David |
| contents | Absolute angular rotation rate measurements with sensitivity better than prad/s would be beneficial for fundamental science investigations. On this regard, large frame Earth based ring laser gyroscopes are top instrumentation as far as bandwidth, long--term operation, and sensitivity are concerned. Here, we demonstrate that the GINGERINO active--ring laser upper limiting noise is close to $2 \times 10^{-15}$ rad/s for $\sim 2 \times 10^5$ s of integration time, as estimated by the Allan deviation evaluated in a differential measurement scheme. This is more than a factor 10 better than the theoretical prediction so far accounted for ideal ring lasers shot--noise with the two beams counter--propagating inside the cavity considered as two independent propagating modes. This feature is related to the peculiarity of real ring laser system dynamics that causes phase cross--talking among the two counter--propagating modes. In this context, the independent beam model is, then, not applicable and the measured noise limit falls below the expected one. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_01386 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Noise level of a ring laser gyroscope in the femto-rad/s range Di Virgilio, Angela D. V. Bajardi, Francesco Basti, Andrea Beverini, Nicolò Carelli, Giorgio Ciampini, Donatella Di Somma, Giuseppe Fuso, Francesco Maccioni, Enrico Marsili, Paolo Ortolan, Antonello Porzio, Alberto Vitali, David Quantum Physics General Relativity and Quantum Cosmology Optics Absolute angular rotation rate measurements with sensitivity better than prad/s would be beneficial for fundamental science investigations. On this regard, large frame Earth based ring laser gyroscopes are top instrumentation as far as bandwidth, long--term operation, and sensitivity are concerned. Here, we demonstrate that the GINGERINO active--ring laser upper limiting noise is close to $2 \times 10^{-15}$ rad/s for $\sim 2 \times 10^5$ s of integration time, as estimated by the Allan deviation evaluated in a differential measurement scheme. This is more than a factor 10 better than the theoretical prediction so far accounted for ideal ring lasers shot--noise with the two beams counter--propagating inside the cavity considered as two independent propagating modes. This feature is related to the peculiarity of real ring laser system dynamics that causes phase cross--talking among the two counter--propagating modes. In this context, the independent beam model is, then, not applicable and the measured noise limit falls below the expected one. |
| title | Noise level of a ring laser gyroscope in the femto-rad/s range |
| topic | Quantum Physics General Relativity and Quantum Cosmology Optics |
| url | https://arxiv.org/abs/2301.01386 |