4 January 2008 Diffraction from grating surfaces of a negative index metamaterial
Author Affiliations +
We discuss the diffraction of waves due to the periodically corrugated boundary of vacuum and a linear, homogeneous negative refraction index metamaterials (NIM). We show by numerical simulation that the grating surfaces can give rise to a well-defined diffracted beam in addition to the negatively refracted beam. The direction of the diffracted beam is consistent with elementary diffraction theory; however, the coupling to this higher order beam is much larger than would be the case for a positive index material (PIM). To explore the properties of diffracted beams in a negative-index sample, we simulate a wave incident on the interface between a NIM grating and free space. The numerical study provides an indication of the relative coupling of the incident wave to the zeroth and first order beams.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Min Cheng, Min Cheng, Yingwu Zhou, Yingwu Zhou, Yuliang Li, Yuliang Li, Xiyao Chen, Xiyao Chen, Xuemei Li, Xuemei Li, Qinxuan Huang, Qinxuan Huang, } "Diffraction from grating surfaces of a negative index metamaterial", Proc. SPIE 6832, Holography and Diffractive Optics III, 68321W (4 January 2008); doi: 10.1117/12.756113; https://doi.org/10.1117/12.756113


Back to Top