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High-Q photonic bandgap resonant cavities: From mm-wave to optical regime
The authors have realized a new class of high-Q resonant cavity using two-dimensional photonic bandgap (PBG) structures and showed that its Q-value can be as high as {approximately}23,000 in the mm-wave regime. They further show that its modal properties, such as the resonant frequency, modal linewidth and number of modes, can be tuned by varying the cavity size. In addition, they present a new nano-fabrication technique for constructing PBG resonant cavities in the near infrared and visible spectral regime