Terahertz waveguide with a negative effective index of refraction measured using time domain techniques
作者： Shashank Pandey , Barun Gupta , Brandon Cui , David Schurig , Ajay Nahata
DOI: 10.1109/IRMMW-THZ.2016.7758921
关键词: Refractive index 、 Metamaterial 、 Waveguide (optics) 、 Terahertz radiation 、 Optical ring resonators 、 Surface plasmon polariton 、 Optics 、 Time domain 、 Optoelectronics 、 Materials science 、 Split-ring resonator
摘要: We present the first experimental realization of a terahertz (THz) waveguide that exhibits negative effective index refraction. To demonstrate this, we designed fabricated and characterized linear array three-dimensional structures consist split ring resonators posts. THz radiation is launched guided in form surface plasmon polaritons (SPPs) along 3D metallic structures. Using time-domain spectroscopy, measure temporal evolution propagating SPP, which yields evidence refractive index.
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