Abstract In this paper, a tunable multilayer metamaterial absorber is proposed, which composed of VO 2 -graphene mixed structure layer, PDMS dielectric layer and bottom metal film layer. The simulation results show that when in the insulating phase Fermi level graphene 0.9 eV, absorption peak 0.75–1.15 THz generated by interaction resonance metal. When 0 2.5–4.5 vanadium dioxide. Therefore, swi...

Dynamically tunable terahertz metamaterial absorbers integrating with active materials have been widely explored. However, there are still problems that need to be urgently solved, such as modulation depth deficiency, a lack of multiparameter-tunable characteristics, and so on. In this paper, absorber composed two concentric double-opening resonant rings is proposed. Semiconductor silicon germa...

Related Articles Highly tunable whispering gallery mode semiconductor lasers with controlled absorber Appl. Phys. Lett. 100, 061112 (2012) A capillary absorption spectrometer for stable carbon isotope ratio (13C/12C) analysis in very small samples Rev. Sci. Instrum. 83, 023101 (2012) Enhancement of random lasing assisted by light scattering and resonance energy transfer based on ZnO/SnO nanocom...

We demonstrate a tunable hybrid Graphene-Nd:YAG cladding waveguide laser exploiting the electro-optic and the Joule heating effects of Graphene. A cladding Nd:YAG waveguide was fabricated by the ion irradiation. The multi-layer graphene were transferred onto the waveguide surface as the saturable absorber to get the Q-switched pulsed laser oscillation in the waveguide. Composing with appropriat...