NSF Nanoscale Science and Engineering Center, University of California, Berkeley, California 94720, USA.
Opt Lett. 2013 Aug 1;38(15):2821-4. doi: 10.1364/OL.38.002821.
We propose a one-way invisible cloak using transformation optics of parity-time (PT) symmetric optical materials. At the spontaneous PT-symmetry breaking point, light is scattered only for incidence along one direction since the phase-matching condition is unidirectionally satisfied, making the cloak one-way invisible. Moreover, optical scattering from the one-way cloak can be further engineered to realize more interesting effects, for example, creating a unidirectional optical illusion of the concealed object.
我们提出了一种使用奇偶时间（PT）对称光学材料的变换光学单向隐形斗篷。在自发的 PT 对称破缺点，由于相位匹配条件是单向满足的，只有沿着一个方向入射的光才会被散射，从而使斗篷具有单向隐形的特性。此外，通过对单向斗篷的光学散射进行进一步设计，可以实现更有趣的效果，例如，对隐藏物体产生单向光学错觉。
