Topological photonic crystal nanocavity laser
By Y. Ota, R. Katsumi, Katsuyuki Watanabe, S. Iwamoto, Yasuhiko Arakawa. Communications Physics, 2018
210 citations recorded by the source corpus.
Topological edge states exist at the interfaces between two topologically distinct materials. The presence and number of such modes are deterministically predicted from the bulk band topologies, known as the bulk-edge correspondence. This principle is highly useful for predictably controlling optical modes in resonators made of photonic crystals (PhCs), leading to the recent demonstrations of microscale topological lasers. Meanwhile, zero-dimensional topological trapped states in the nanoscale remained unexplored, despite its importance for enhancing light–matter interactions and for wide applications including single-mode nanolasers. Here, we report a topological PhC nanocavity with a near-diffraction-limited mode volume and its application to single-mode lasing. The topological origin of the nanocavity, formed at the interface between two topologically distinct PhCs, guarantees the existence of only one mode within its photonic bandgap. The observed lasing accompanies a high spontaneous emission coupling factor stemming from the nanoscale confinement. These results encompass a way to greatly downscale topological photonics.For most lasing and photonic applications, it is essential to control the number of lasing modes that are present. In this work, an interface between two topologically distinct photonic crystals is used to ensure single-mode lasing with enhanced light-matter interactions due to a near-diffraction-limited mode volume.
Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering
View Paper: https://www.semanticscholar.org/paper/9f03bbaa5221279591b75840df863b587b3202c4
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
In Biomedical Engineering
Citations in the corpus
- Quantum Electrodynamics in a Topological Waveguide (2020, methodology): “The SSH model, and its various extensions, have been used in photonics to explore a variety of optical phenomena, from robust lasing in arrays of microcavities [10, 11] and photonic crystals [12], to disorder-insensitive 3rd harmonic generation in zigzag nanoparticle arrays [13].”
- Topological photonics (2018, background): “The first examples of a lasing operation in a topological nontrivial system were reported in one-dimensional chains of pillar microcavities (St-Jean et al., 2017), ring resonators (Parto et al., 2018; Zhao et al., 2018), or photonics crystal nanocavity (Ota et al., 2018).”
- Roadmap on topological photonics (2022, methodology): “Beyond the SSH model, lasing of topological edge states protected by the inversion symmetry have also been experimentally demonstrated in a photonic nanocavity [154], as well as zero-dimensional corner states of higher-order topological models in PhCs [155–157].”