Voltage tuning of plasmonic absorbers by indium tin oxide

Yi, Fei; Shim, Euijae; Zhu, Alexander Y.; Zhu, Hai; Reed, Jason C; Cubukcu, Ertugrul
June 2013
Applied Physics Letters;6/3/2013, Vol. 102 Issue 22, p221102
Academic Journal
We experimentally demonstrate electrical tuning of plasmonic mid-infrared absorber resonances at 4 μm wavelength. The perfect infrared absorption is realized by an array of gold nanostrip antennas separated from a back reflector by a thin dielectric layer. An indium tin oxide active layer strongly coupled to the optical near field of the plasmonic absorber allows for spectral tunability.


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