The spectral and energy characteristics of the tunable thin planar dielectric resonator with the movable metal mirror are researched. It is found that the high-Q HE-polarized whispering gallery modes (WGMs) are effectively excited in such a resonator by the dielectric waveguide. A mode set of the tunable thin planar dielectric resonator depends on the presence of an air gap in its design. Changing the height of the air gap affects the energy characteristics of the tunable thin planar dielectric resonators (DR). Shifting the resonant fields of WGMs from the dielectric disk to the air gap is the reason for this effect. It is shown that at certain heights of the air gap, increasing the unloaded Q-factor of the tunable thin planar DR and improving the excitation efficiency of WGMs in it is achieved.

中文翻译：

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用回音壁模式增加薄平面介质谐振器的 Q 因子

研究了带有可移动金属镜面的可调谐薄平面介质谐振器的光谱和能量特性。发现高问贺极化回音壁模式（WGM）在这样的谐振器中被介电波导有效地激发。可调薄平面介电谐振器的模式集取决于其设计中是否存在气隙。改变气隙的高度会影响可调谐薄平面介电谐振器 (DR) 的能量特性。将 WGM 的共振场从介电盘转移到气隙是产生这种效应的原因。结果表明，在一定高度的气隙，增加空载问实现了可调薄平面DR的-因子并提高了其中WGM的激发效率。