Focusing membrane metamirrors for integrated cavity optomechanics
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866914687501729792 |
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| author | Agrawal, A. R. Manley, J. Allepuz-Requena, D. Wilson, D. J. |
| author_facet | Agrawal, A. R. Manley, J. Allepuz-Requena, D. Wilson, D. J. |
| contents | We have realized a suspended, high-reflectivity focusing metamirror ($f\approx 10$ cm, $\mathcal{R} \approx 99\%$) by non-periodic photonic crystal patterning of a Si$_3$N$_4$ membrane. The design enables construction of a stable, short ($L$ = 30 $μ$m), high-finesse ($\mathcal{F}>600$) membrane cavity optomechanical system using a single plano dielectric end-mirror. We present the metamirror design, fabrication process, and characterization of its reflectivity using both free space and cavity-based transmission measurements. The mirror's effective radius of curvature is inferred from the transverse mode spectrum of the cavity. In combination with phononic engineering and metallization, focusing membrane mirrors offer a route towards high-cooperativity, vertically-integrated cavity optomechanical systems with applications ranging from precision force sensing to hybrid quantum transduction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_16695 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Focusing membrane metamirrors for integrated cavity optomechanics Agrawal, A. R. Manley, J. Allepuz-Requena, D. Wilson, D. J. Optics Applied Physics Quantum Physics We have realized a suspended, high-reflectivity focusing metamirror ($f\approx 10$ cm, $\mathcal{R} \approx 99\%$) by non-periodic photonic crystal patterning of a Si$_3$N$_4$ membrane. The design enables construction of a stable, short ($L$ = 30 $μ$m), high-finesse ($\mathcal{F}>600$) membrane cavity optomechanical system using a single plano dielectric end-mirror. We present the metamirror design, fabrication process, and characterization of its reflectivity using both free space and cavity-based transmission measurements. The mirror's effective radius of curvature is inferred from the transverse mode spectrum of the cavity. In combination with phononic engineering and metallization, focusing membrane mirrors offer a route towards high-cooperativity, vertically-integrated cavity optomechanical systems with applications ranging from precision force sensing to hybrid quantum transduction. |
| title | Focusing membrane metamirrors for integrated cavity optomechanics |
| topic | Optics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2401.16695 |