A microrod-resonator Brillouin laser with 240 Hz absolute linewidth
We demonstrate an ultralow-noise microrod-resonator based laser that oscillates on the gain supplied by the stimulated Brillouin scattering optical nonlinearity. Microresonator Brillouin lasers are known to offer an outstanding frequency noise floor, which is limited by fundamental thermal fluctuati...
| Principais autores: | , , , , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
IOP Publishing
2016-01-01
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| coleção: | New Journal of Physics |
| Assuntos: | |
| Acesso em linha: | https://doi.org/10.1088/1367-2630/18/4/045001 |
| _version_ | 1827873699457400832 |
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| author | William Loh Joe Becker Daniel C Cole Aurelien Coillet Fred N Baynes Scott B Papp Scott A Diddams |
| author_facet | William Loh Joe Becker Daniel C Cole Aurelien Coillet Fred N Baynes Scott B Papp Scott A Diddams |
| author_sort | William Loh |
| collection | DOAJ |
| description | We demonstrate an ultralow-noise microrod-resonator based laser that oscillates on the gain supplied by the stimulated Brillouin scattering optical nonlinearity. Microresonator Brillouin lasers are known to offer an outstanding frequency noise floor, which is limited by fundamental thermal fluctuations. Here, we show experimental evidence that thermal effects also dominate the close-to-carrier frequency fluctuations. The 6 mm diameter microrod resonator used in our experiments has a large optical mode area of ∼100 μ m ^2 , and hence its 10 ms thermal time constant filters the close-to-carrier optical frequency noise. The result is an absolute laser linewidth of 240 Hz with a corresponding white-frequency noise floor of 0.1 Hz ^2 Hz ^−1 . We explain the steady-state performance of this laser by measurements of its operation state and of its mode detuning and lineshape. Our results highlight a mechanism for noise that is common to many microresonator devices due to the inherent coupling between intracavity power and mode frequency. We demonstrate the ability to reduce this noise through a feedback loop that stabilizes the intracavity power. |
| first_indexed | 2024-03-12T16:40:57Z |
| format | Article |
| id | doaj.art-e23f0454a5b5454b8cebce34093388da |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:40:57Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e23f0454a5b5454b8cebce34093388da2023-08-08T14:31:35ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118404500110.1088/1367-2630/18/4/045001A microrod-resonator Brillouin laser with 240 Hz absolute linewidthWilliam Loh0Joe Becker1Daniel C Cole2Aurelien Coillet3Fred N Baynes4Scott B Papp5Scott A Diddams6National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USAWe demonstrate an ultralow-noise microrod-resonator based laser that oscillates on the gain supplied by the stimulated Brillouin scattering optical nonlinearity. Microresonator Brillouin lasers are known to offer an outstanding frequency noise floor, which is limited by fundamental thermal fluctuations. Here, we show experimental evidence that thermal effects also dominate the close-to-carrier frequency fluctuations. The 6 mm diameter microrod resonator used in our experiments has a large optical mode area of ∼100 μ m ^2 , and hence its 10 ms thermal time constant filters the close-to-carrier optical frequency noise. The result is an absolute laser linewidth of 240 Hz with a corresponding white-frequency noise floor of 0.1 Hz ^2 Hz ^−1 . We explain the steady-state performance of this laser by measurements of its operation state and of its mode detuning and lineshape. Our results highlight a mechanism for noise that is common to many microresonator devices due to the inherent coupling between intracavity power and mode frequency. We demonstrate the ability to reduce this noise through a feedback loop that stabilizes the intracavity power.https://doi.org/10.1088/1367-2630/18/4/045001microresonatorslasersstimulated Brillouin scatteringnarrow linewidth |
| spellingShingle | William Loh Joe Becker Daniel C Cole Aurelien Coillet Fred N Baynes Scott B Papp Scott A Diddams A microrod-resonator Brillouin laser with 240 Hz absolute linewidth New Journal of Physics microresonators lasers stimulated Brillouin scattering narrow linewidth |
| title | A microrod-resonator Brillouin laser with 240 Hz absolute linewidth |
| title_full | A microrod-resonator Brillouin laser with 240 Hz absolute linewidth |
| title_fullStr | A microrod-resonator Brillouin laser with 240 Hz absolute linewidth |
| title_full_unstemmed | A microrod-resonator Brillouin laser with 240 Hz absolute linewidth |
| title_short | A microrod-resonator Brillouin laser with 240 Hz absolute linewidth |
| title_sort | microrod resonator brillouin laser with 240 hz absolute linewidth |
| topic | microresonators lasers stimulated Brillouin scattering narrow linewidth |
| url | https://doi.org/10.1088/1367-2630/18/4/045001 |
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