Inside Front Cover: Highly flexible broadband Terahertz metamaterial quarter-wave plate (Laser Photonics Rev. 8(4)/2014)



With engineered multilayer metamaterials, a highly flexible, high efficiency and tunable quarter-wave plate is demonstrated in a broadband terahertz regime. Two layers of metasurfaces compensate with each to realize an achromatic π/2 phase retardance with high transmission, revealing a uniquemechanism to manipulate the phase retardance of terahertz radiation.

(Picture: Longqing Cong et al., 10.1002/lpor.201300205, pp. 626–632, in this issue)