Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition
Abstract Optical-based terahertz sources are important for many burgeoning scientific and technological applications. Among such applications is precision spectroscopy of molecules, which exhibit rotational transitions at terahertz frequencies. Stemming from precision spectroscopy is frequency discr...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-57826-2 |
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| _version_ | 1850039699554435072 |
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| author | James Greenberg Brendan M. Heffernan William F. McGrew Keisuke Nose Antoine Rolland |
| author_facet | James Greenberg Brendan M. Heffernan William F. McGrew Keisuke Nose Antoine Rolland |
| author_sort | James Greenberg |
| collection | DOAJ |
| description | Abstract Optical-based terahertz sources are important for many burgeoning scientific and technological applications. Among such applications is precision spectroscopy of molecules, which exhibit rotational transitions at terahertz frequencies. Stemming from precision spectroscopy is frequency discrimination (a core technology in atomic clocks) and stabilization of terahertz sources. Because many molecular species exist in the gas phase at room temperature, their transitions are prime candidates for practical terahertz frequency references. We demonstrate the stabilization of a low phase-noise, dual-wavelength Brillouin laser (DWBL) terahertz oscillator to a rotational transition of carbonyl sulfide (OCS). We achieve an instability of $$1.2\times 1{0}^{-12}/\sqrt{\tau }$$ 1.2 × 1 0 − 12 / τ , where τ is the averaging time in seconds. The signal-to-noise ratio and intermodulation limitations of the experiment are also discussed. We thus demonstrate a highly stable and spectrally pure terahertz frequency source. Our presented architecture will likely benefit metrology, spectroscopy, precision terahertz studies, and beyond. |
| format | Article |
| id | doaj-art-fffd506aae8e4f2ea633fb2c13389049 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-fffd506aae8e4f2ea633fb2c133890492025-08-20T02:56:15ZengNature PortfolioNature Communications2041-17232025-03-011611810.1038/s41467-025-57826-2Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transitionJames Greenberg0Brendan M. Heffernan1William F. McGrew2Keisuke Nose3Antoine Rolland4Boulder Research Labs, IMRA America, Inc.Boulder Research Labs, IMRA America, Inc.Boulder Research Labs, IMRA America, Inc.Boulder Research Labs, IMRA America, Inc.Boulder Research Labs, IMRA America, Inc.Abstract Optical-based terahertz sources are important for many burgeoning scientific and technological applications. Among such applications is precision spectroscopy of molecules, which exhibit rotational transitions at terahertz frequencies. Stemming from precision spectroscopy is frequency discrimination (a core technology in atomic clocks) and stabilization of terahertz sources. Because many molecular species exist in the gas phase at room temperature, their transitions are prime candidates for practical terahertz frequency references. We demonstrate the stabilization of a low phase-noise, dual-wavelength Brillouin laser (DWBL) terahertz oscillator to a rotational transition of carbonyl sulfide (OCS). We achieve an instability of $$1.2\times 1{0}^{-12}/\sqrt{\tau }$$ 1.2 × 1 0 − 12 / τ , where τ is the averaging time in seconds. The signal-to-noise ratio and intermodulation limitations of the experiment are also discussed. We thus demonstrate a highly stable and spectrally pure terahertz frequency source. Our presented architecture will likely benefit metrology, spectroscopy, precision terahertz studies, and beyond.https://doi.org/10.1038/s41467-025-57826-2 |
| spellingShingle | James Greenberg Brendan M. Heffernan William F. McGrew Keisuke Nose Antoine Rolland Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition Nature Communications |
| title | Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| title_full | Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| title_fullStr | Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| title_full_unstemmed | Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| title_short | Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| title_sort | dual wavelength brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition |
| url | https://doi.org/10.1038/s41467-025-57826-2 |
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