Journal: ACS Photonics
Article Title: Single-Mode Laser in the Telecom Range by Deterministic Amplification of the Topological Interface Mode
doi: 10.1021/acsphotonics.3c01372
Figure Lengend Snippet: Topological photonic nanorod lattice. (a) Two dimerized nanorod lattices with equal unit cells are overlapped on one edge to create a symmetric topological cavity. As indicated by the coloring, the symmetricity implies a switching of the two sites within the unit cell. (b–d) 3D-FDTD simulations of this structure. (b) Spectrum containing a pronounced photonic band gap spanning 150 nm and the cavity mode centered in it. (c) Mode profile corresponding to the interface mode overlaid with the outline of the device. (d) Band structure simulation verifying the existence of a fully open photonic band gap.
Article Snippet: 3D finite-difference time domain (FDTD) simulations of the ideal topological lattice were carried out in the commercially available software Ansys Lumerical FDTD.
Techniques: