Opt Lett. 2019 Nov 1;44(21):5133-5136. doi: 10.1364/OL.44.005133.
We theoretically demonstrate a nanobeam cavity based on a photonic crystal ridge that supports localized Bloch surface waves (BSWs) propagating at the truncation interface of a periodic multilayer. Combining the appealing characteristics of a nanobeam cavity (such as flexible geometry, small footprint size, and an etching-free fabrication with the leading lithographic technologies) with the versatility of BSW (whose dispersion relation is finely tunable as compared to other surface waves), this structure may prove to be a customizable visible-to-IR platform, well suited for a number of applications ranging from optical sensing to the control of single-photon emission from embedded nanoemitters such as quantum dots or color centers.
我们从理论上证明了一种基于光子晶体脊的纳米梁腔，该腔支持在周期性多层的截断界面上传播的局域布洛赫表面波（BSW）。将纳米梁腔的吸引人的特性（例如灵活的几何形状、小的占地面积以及与领先的光刻技术结合的无蚀刻制造）与 BSW 的多功能性（与其他表面波相比，其色散关系可以精细地调整）相结合，这种结构可能被证明是一个可定制的可见到红外平台，非常适合从光学传感到控制嵌入纳米发射器（如量子点或色心）的单光子发射等多种应用。
