All-dielectric three-dimensional broadband Eaton lens with large refractive index range
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- All-dielectric three-dimensional broadband Eaton lens with large refractive index range
- 发表刊物：
- Applied physics letters
- 摘要：
- We proposed a method to realize three-dimensional (3D) gradient index (GRIN) devices requiring large refractive index (RI) range with broadband performance. By combining non-resonant GRIN woodpile photonic crystals (PC) structure in the metmaterial regime with a compound liquid medium, a wide RI range (1~6.32) was fulfilled flexibly. As a proof-of-principle for the low-loss and non-dispersive method, a 3D Eaton lens was designed and fabricated based on 3D printing process. Full-wave simulation and experiment validated its omnidirectional wave bending effects in a broad bandwidth covering Ku band (12 GHz~18 GHz).
- 合写作者：
- Ming Yin, Xiao Yong Tian (corr au) et al
- 卷号：
- 104
- 页面范围：
- 094101
- 是否译文：
- 否
- 发表时间：
- 2014-02-22