论文标题
在非线性跨面中动态连贯的完美吸收
Dynamic coherent perfect absorption in nonlinear metasurfaces
论文作者
论文摘要
我们提出了一个基于超薄非线性跨膜的可调连贯的完美吸收器。非线性跨表面由等离激元纳米antennas制成，该等离子纳米antennas耦合到具有较大的光学非线性的Epsilon-Near-Zero材料。连贯的完美吸收是通过控制输入梁的相对阶段来实现的。我们表明，通过改变泵束的强度，可以将非线性跨表面的光学响应从完整的吸收调节到部分吸收。提出的非线性跨表面可用于设计光学可调的热发射器，调制器和传感器。
We propose a tunable coherent perfect absorber based on ultrathin nonlinear metasurfaces. The nonlinear metasurface is made of plasmonic nanoantennas coupled to an epsilon-near-zero material with a large optical nonlinearity. The coherent perfect absorption is achieved by controlling the relative phases of the input beams. We show that the optical response of the nonlinear metasurface can be tuned from a complete to a partial absorption by changing the intensity of the pump beam. The proposed nonlinear metasurface can be used to design optically tunable thermal emitters, modulators, and sensors.
