Calibrated Plane--Convex Microcavity for Room-Temperature Polaritons with Geometric \(g\)-Scaling
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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
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2025
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| author | Huang, Ling-Qi Chen, Shih-Chung Lin, Chia-Hao Wang, Li-Tzu Shukla, Khemendra Hsieh, Kai-Peng Huang, Leng-Hsien Kao, Tsung-Sheng Ahn, Hyeyoung Chen, Tzu-Ling |
| author_facet | Huang, Ling-Qi Chen, Shih-Chung Lin, Chia-Hao Wang, Li-Tzu Shukla, Khemendra Hsieh, Kai-Peng Huang, Leng-Hsien Kao, Tsung-Sheng Ahn, Hyeyoung Chen, Tzu-Ling |
| contents | We present a plane--convex open microcavity that supports room-temperature polariton spectroscopy and offers a simple geometric handle on the coupling rate. The effective length ($L_{\mathrm{eff}}$) is absolutely calibrated from the free-spectral range, and piezo tuning is performed at near-normal incidence ($k_{\parallel}!\approx!0$) to avoid angle-induced degradation. Using spin-coated PEA$2$PbI$4$ quasi-2D perovskites, we observe clear anti-crossings in reflection, with vacuum Rabi splittings up to $71~\mathrm{meV}$ (reflection) and $87~\mathrm{meV}$ (PL) near $L{\mathrm{eff}}!\approx!3~μ\mathrm{m}$. A linewidth-corrected analysis converts the apparent splitting into the coherent exciton--photon coupling rate $g$, revealing a robust geometric scaling $g \propto L{\mathrm{eff}}^{-1/2}$ across multiple longitudinal orders and spatial sites, consistent with the filled-mode thin-film limit where the transverse area cancels in the mode volume. The platform establishes a compact, broadly compatible testbed for room-temperature polaritons and provides a practical design rule: shortening $L_{\mathrm{eff}}$ is a reliable geometric lever to strengthen collective coupling in plane--convex microcavities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_12566 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Calibrated Plane--Convex Microcavity for Room-Temperature Polaritons with Geometric \(g\)-Scaling Huang, Ling-Qi Chen, Shih-Chung Lin, Chia-Hao Wang, Li-Tzu Shukla, Khemendra Hsieh, Kai-Peng Huang, Leng-Hsien Kao, Tsung-Sheng Ahn, Hyeyoung Chen, Tzu-Ling Optics Applied Physics Quantum Physics We present a plane--convex open microcavity that supports room-temperature polariton spectroscopy and offers a simple geometric handle on the coupling rate. The effective length ($L_{\mathrm{eff}}$) is absolutely calibrated from the free-spectral range, and piezo tuning is performed at near-normal incidence ($k_{\parallel}!\approx!0$) to avoid angle-induced degradation. Using spin-coated PEA$2$PbI$4$ quasi-2D perovskites, we observe clear anti-crossings in reflection, with vacuum Rabi splittings up to $71~\mathrm{meV}$ (reflection) and $87~\mathrm{meV}$ (PL) near $L{\mathrm{eff}}!\approx!3~μ\mathrm{m}$. A linewidth-corrected analysis converts the apparent splitting into the coherent exciton--photon coupling rate $g$, revealing a robust geometric scaling $g \propto L{\mathrm{eff}}^{-1/2}$ across multiple longitudinal orders and spatial sites, consistent with the filled-mode thin-film limit where the transverse area cancels in the mode volume. The platform establishes a compact, broadly compatible testbed for room-temperature polaritons and provides a practical design rule: shortening $L_{\mathrm{eff}}$ is a reliable geometric lever to strengthen collective coupling in plane--convex microcavities. |
| title | Calibrated Plane--Convex Microcavity for Room-Temperature Polaritons with Geometric \(g\)-Scaling |
| topic | Optics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2512.12566 |