Asymmetric Guided-mode Resonance Filters for Long-wave Infrared Applications

다국어 초록 (Multilingual Abstract)

This study introduces a novel approach to developing long-wave infrared (LWIR) filters based on asymmetric guided-mode resonances (aGMRs) in one-dimensional photonic lattices (PLs). By incorporating structural asymmetry, we theoretically demonstrate both notch and bandpass filters operating in the LWIR region with high optical density and narrow spectral linewidths. The aGMRs enable the excitation of quasi-bound states in the continuum, resulting in high-quality resonances and enhanced radiation. Our results demonstrate a notch filter at λ = 9.806 μm and a bandpass filter at λ = 9.34 μm with excellent performance. This innovative method is expected to have significant potential for developing various LWIR applications.