Quasibound states in the continuum in photonic-crystal-based optomechanical microcavities
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913189235523584 |
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| author | Péralle, Cindy Manjeshwar, Sushanth Kini Ciers, Anastasiia Wieczorek, Witlef Tassin, Philippe |
| author_facet | Péralle, Cindy Manjeshwar, Sushanth Kini Ciers, Anastasiia Wieczorek, Witlef Tassin, Philippe |
| contents | We present a detailed study of mechanically compliant, photonic-crystal-based microcavities featuring a quasi-bound state in the continuum. Such systems have recently been predicted to reduce the optical loss in Fabry-Perot-type optomechanical cavities. However, they require two identical photonic-crystal slabs facing each other, which poses a considerable challenge for experimental implementation. We investigate how such an ideal system can be simplified and still exhibit a quasi-bound state in the continuum. We find that a suspended photonic-crystal slab facing a distributed Bragg reflector realizes an optomechanical system with a quasi-bound state in the continuum. In this system, the radiative cavity loss can be eliminated to the extent that the cavity loss is dominated by dissipative loss originating from material absorption only. These proposed optomechanical cavity designs are predicted to feature optical quality factors in excess of 10^5. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_17831 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quasibound states in the continuum in photonic-crystal-based optomechanical microcavities Péralle, Cindy Manjeshwar, Sushanth Kini Ciers, Anastasiia Wieczorek, Witlef Tassin, Philippe Optics Applied Physics Quantum Physics We present a detailed study of mechanically compliant, photonic-crystal-based microcavities featuring a quasi-bound state in the continuum. Such systems have recently been predicted to reduce the optical loss in Fabry-Perot-type optomechanical cavities. However, they require two identical photonic-crystal slabs facing each other, which poses a considerable challenge for experimental implementation. We investigate how such an ideal system can be simplified and still exhibit a quasi-bound state in the continuum. We find that a suspended photonic-crystal slab facing a distributed Bragg reflector realizes an optomechanical system with a quasi-bound state in the continuum. In this system, the radiative cavity loss can be eliminated to the extent that the cavity loss is dominated by dissipative loss originating from material absorption only. These proposed optomechanical cavity designs are predicted to feature optical quality factors in excess of 10^5. |
| title | Quasibound states in the continuum in photonic-crystal-based optomechanical microcavities |
| topic | Optics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2306.17831 |