Affiliation:
1. Jeju National University (JNU)
2. Chungbuk National University (CBNU)
Abstract
To allow a high quality factor (Q-factor) to a sub-wavelength dielectric resonator, quasi-bound states in the continuum (Q-BICs) have gained much interest. However, the Q-BIC resonance condition is too sensitive to the geometry of the resonator, and its practical broadband generation on a single-wafer platform has been limited. Here we present that, employing the base angle as a structural degree of freedom, the truncated nano-cone resonator supports the Q-BIC resonance with a high Q-factor of >150 over a wide wavelength range of >100 nm. We expect our approach will boost the utilization of the Q-BIC resonance for various applications requiring broadband spectral tuning.
Funder
Korea Advanced Institute of Science and Technology
Institute for Information and Communications Technology Promotion
National Research Foundation of Korea
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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