3-D Printed High-Q Ceramic Photonic Crystal Resonators for WR3-Band Applications

With the continuous advancement of terahertz technology, developing passive components has become crucial for integrating future terahertz systems. Ceramic 3-D printing has emerged as a promising fabrication method for creating low-loss, high-permittivity dielectric devices. However, designing passive components for the WR3 band (220–330 GHz) presents significant challenges due to the relatively small feature sizes required, which demand exceptional print quality. In this study, we design WR3-band photonic crystal slot resonators with high Q factors to evaluate its suitability for 3-D printing. Multiple samples are fabricated in a single run. Their physical dimensions and frequency responses are measured to assess the printing quality and reliability. This work provides valuable insights into the design and fabrication strategies of WR3 band components using ceramic 3-D printing, paving the way for the development of fully integrated terahertz systems.