Tunable Plasmon–Induced Transparency Based on Dirac Semimetals
Source abstract
Abstract
Numerical and theoretical studies were conducted on the plasmon induced transparency (PIT) of the symmetrical structure of Dirac semi-metal films (DSFS). The films have a parallel strip and split resonant ring structure. After analysing the surface current intensity and distribution, it was found that the electromagnetically induced transparency is as a result of destructive interference between these two structures, with the amplitude modulation depth of the frequency of the transmission window reaching as high as 99.09%. Moreover, by adjusting the Fermi level of the DSFS, the Fermi level changed from 50 to 90 meV, and the transmission window blue-shifted from 0.529 to 0.799 THz. The transmission peak frequency was found to have a linear relationship with the Fermi level. Similarly, the transmission phase and group delay under different Fermi levels was investigated. The positive group delay of the film reaches 7.026 ps, which provides a direction for new applications of terahertz, such as optical storage and slow optical devices.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Metamaterials and Metasurfaces Applications · Topological Materials and Phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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