Nicolaou Costa, Lau Wah Tung, Gad Raanan, Akhavan Hooman, Schilling Ryan, Levi Ofer
Opt Express. 2013 Dec 16;21(25):31698-712. doi: 10.1364/OE.21.031698.
We demonstrate for the first time a 300nm thick, 300μm × 300μm 2D dielectric photonic crystal slab membrane with a quality factor of 10,600 by coupling light to slightly perturbed dark modes through alternating nano-hole sizes. The newly created fundamental guided resonances greatly reduce nano-fabrication accuracy requirements. Moreover, we created a new layer architecture resulting in electric field enhancement at the interface between the slab and sensing regions, and spectral sensitivity of >800 nm/RIU, that is, >0.8 of the single-mode theoretical upper limit of spectral sensitivity.
我们首次展示了一种厚度为300纳米、尺寸为300微米×300微米的二维介电光子晶体平板膜，其品质因数为10,600，通过交替纳米孔尺寸将光耦合到轻微扰动的暗模式。新产生的基模导模共振大大降低了纳米制造精度要求。此外，我们创建了一种新的层结构，导致平板与传感区域之间的界面处电场增强，光谱灵敏度大于800纳米/RIU，即大于单模光谱灵敏度理论上限的0.8。
