Ultrastable vacuum-gap Fabry-Pérot cavities operated in air
Fuente:
arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914841201999872 |
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| author | Liu, Yifan Jin, Naijun Lee, Dahyeon McLemore, Charles Nakamura, Takuma Kelleher, Megan Cheng, Haotian Schima, Susan Hoghooghi, Nazanin Diddams, Scott Rakich, Peter Quinlan, Franklyn |
| author_facet | Liu, Yifan Jin, Naijun Lee, Dahyeon McLemore, Charles Nakamura, Takuma Kelleher, Megan Cheng, Haotian Schima, Susan Hoghooghi, Nazanin Diddams, Scott Rakich, Peter Quinlan, Franklyn |
| contents | We demonstrate a vacuum-gap ultrastable optical reference cavity that does not require a vacuum enclosure. Our simple method of optical contact bonding in a vacuum environment allows for cavity operation in air while maintaining vacuum between the cavity mirrors. Vacuum is maintained long term, with no observed degradation in cavity stability for over 1 year after bonding. For a 1550 nm laser stabilized to a 9.7 mL in-vacuum bonded cavity, the measured Allan deviation is $2.4\times 10^{-14}$ at 1 s and its phase noise is thermal-noise-limited from 0.1 Hz to 10 kHz, reaching about -105 dBc/Hz at 10 kHz offset frequency. This represents the highest stability of any oscillator operated without a vacuum enclosure. Furthermore, we demonstrate a 0.5 mL in-vacuum bonded cavity created using microfabricated mirrors and cavity dicing, with phase noise reaching -95 dBc/Hz at 10 kHz offset frequency. By relieving the need for high-vacuum enclosures, we greatly enhance the portability and utility of low noise, compact cavity-stabilized lasers, with applications ranging from environmental sensing to mobile optical clocks to ultralow noise microwave generation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_13159 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrastable vacuum-gap Fabry-Pérot cavities operated in air Liu, Yifan Jin, Naijun Lee, Dahyeon McLemore, Charles Nakamura, Takuma Kelleher, Megan Cheng, Haotian Schima, Susan Hoghooghi, Nazanin Diddams, Scott Rakich, Peter Quinlan, Franklyn Optics Instrumentation and Detectors We demonstrate a vacuum-gap ultrastable optical reference cavity that does not require a vacuum enclosure. Our simple method of optical contact bonding in a vacuum environment allows for cavity operation in air while maintaining vacuum between the cavity mirrors. Vacuum is maintained long term, with no observed degradation in cavity stability for over 1 year after bonding. For a 1550 nm laser stabilized to a 9.7 mL in-vacuum bonded cavity, the measured Allan deviation is $2.4\times 10^{-14}$ at 1 s and its phase noise is thermal-noise-limited from 0.1 Hz to 10 kHz, reaching about -105 dBc/Hz at 10 kHz offset frequency. This represents the highest stability of any oscillator operated without a vacuum enclosure. Furthermore, we demonstrate a 0.5 mL in-vacuum bonded cavity created using microfabricated mirrors and cavity dicing, with phase noise reaching -95 dBc/Hz at 10 kHz offset frequency. By relieving the need for high-vacuum enclosures, we greatly enhance the portability and utility of low noise, compact cavity-stabilized lasers, with applications ranging from environmental sensing to mobile optical clocks to ultralow noise microwave generation. |
| title | Ultrastable vacuum-gap Fabry-Pérot cavities operated in air |
| topic | Optics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2406.13159 |