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Photonic spin-orbit coupling and topology in organic microcavities
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DOI：10.1117/1.AP.8.2.024002.png)
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Abstract
En 中文
Photonic topological phenomena have emerged as a frontier research focus due to their defect-immune light transport capabilities. The central pathway to achieving topological photonics exploits the innate topology of optical modes governed by photonic spin-orbit coupling (SOC). Organic crystals leverage giant anisotropy and flexibility to generate room-temperature, magnetic-field-free photonic SOC and topological states. This comprehensive analysis examines recent breakthroughs in organic photonic SOC, encompassing the following: (i) experimental and theoretical progress across platforms-thin films, bulk solids, and liquid crystals (LCs); (ii) mechanisms by which organic photonic SOC induces local topologically nontrivial states without external magnetic fields; (iii) interplay between SOC and non-Hermiticity (e.g., gain and dissipation) leading to exceptional points (EPs) and Fermi arcs. Finally, we highlight the potential of integrating flexible organic crystals with imprint lithography for wearable topological photonic devices and the exploration of non-Abelian braided topological phases. The combined advantages of strong SOC strength, room-temperature operation, and dynamic tunability in organic materials establish a new paradigm for scalable topological photonic devices.
Keywords:
organic semiconductor
single crystal
photonic spin-orbit coupling
topological photonics
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18.8
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961
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