Characterization of Quasi-Bound State in the Continuum Structures for Terahertz Band Applications

The Bound State in the Continuum (BIC) has gained widespread attention, yet conventional metasurfaces often suffer from significant Ohmic losses due to metallic structures. In contrast, our groundbreaking THz resonance modulator, crafted from pure PMMA and ceramic materials using advanced CNC machining, represents a novel approach. This digital manufacturing method allows unparalleled flexibility, resulting in high-quality THz modulators with superior performance and efficiency. By overcoming the limitations of metallic structures, our suspended grating structure achieves a high Q-factor, crucial for optimizing vibrational efficiency. This advancement marks a pivotal moment in THz technology, promising a bright future for applications in communication and sensing.