AI Article Synopsis
- Researchers achieved an ultrahigh Q-factor surface lattice resonance using a U-shaped split ring resonator (U-SRR) array, with remarkable transmission resonance amplitude reaching up to 0.8.* -
- The Q-factor of the SLR exceeded 10 due to two main radiation suppression mechanisms: a conventional dipole moment reduction and excitation of an in-plane quadrupole, both resulting from the unique design of the U-SRR.* -
- This novel ultrahigh Q SLR platform holds potential for creating more flexible and advanced devices at the nanoscale.*
Article Abstract
We achieved an ultrahigh Q surface lattice resonance (SLR) using a conventional U-shaped split ring resonator (U-SRR) array. Numerical results confirmed by semi-analytical analysis show that with the transmission resonance amplitude up to 0.8, the Q-factor of the SLR can still surpass 10. The physical mechanisms of the ultrahigh Q-factor were also investigated. Besides the radiation suppression provided by conventional SLR, the unique geometry of the U-SRR can further offer dual radiation suppression mechanisms: reduction of the dipole moment and excitation of the in-plane quadrupole. We expect that the proposed ultrahigh Q SLR platform will be explored for more flexible and advanced nanoscale devices.
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| http://dx.doi.org/10.1364/OL.529362 | DOI Listing |
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