黑磷-硫化锌异质结表面古斯-汉欣位移的可调性

Tunability of the Goos-Hanchen shift on the surface of black phosphorus-ZnS heterostructure

基于传输矩阵和表面声子极化子理论,设计了黑磷-硫化锌异质结来实现对远红外区间反射光束古斯-汉欣(GH)位移的调控.理论计算结果表明,通过控制黑磷的电荷掺杂密度及各项异性轴方向等因素,GH位移可被调控且其最大值甚至可达到真空波长的68倍左右.这些研究结果对于新型纳米光学器件的研究具有重要意义.

Based on the transmission matrix and surface phonon polaritons,a black phosphorus(BP)-ZnS heterostructure is designed to regulate the Goos-Hanchen(GH)shift of reflected beams in the far infrared region.Theoretical calculation results show that the GH shift can be tuned by controlling the charge doping density and anisotropic axis-orientation of BP,and the maximum value of GH shift can even reach 68 times vacuum wavelength.These results are of great significance for the research of new nano-optical devices.