Bikbaev Rashid G, Maksimov Dmitrii N, Chen Kuo-Ping, Timofeev Ivan V
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Federal University, Krasnoyarsk 660041, Russia.
Materials (Basel). 2022 Aug 31;15(17):6014. doi: 10.3390/ma15176014.
We consider Tamm plasmon polariton in a subwavelength grating patterned on top of a Bragg reflector. We demonstrate dynamic control of the phase and amplitude of a plane wave reflected from such metagrating due to resonant coupling with the Tamm plasmon polariton. The tunability of the phase and amplitude of the reflected wave arises from modulation of the refractive index of a transparent conductive oxide layer by applying the bias voltage. The electrical switching of diffracted beams of the ±1st order is shown. The possibility of doubling the angular resolution of beam steering by using asymmetric reflected phase distribution with integer and half-integer periods of the metagrating is demonstrated.
我们研究了在布拉格反射器顶部图案化的亚波长光栅中的塔姆表面等离子体极化激元。我们证明了由于与塔姆表面等离子体极化激元的共振耦合，从这种超光栅反射的平面波的相位和幅度可以实现动态控制。反射波相位和幅度的可调性源于通过施加偏置电压来调制透明导电氧化物层的折射率。展示了±1级衍射光束的电开关特性。还证明了利用具有超光栅整数和半整数周期的不对称反射相位分布来使光束转向的角分辨率加倍的可能性。
