Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials

Light, Science & Applications
Huseyin R SerenR D Averitt

Abstract

The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector and frequency of light. Integration of semiconductors into the active regions of metallic resonators is a proven approach for creating nonlinear metamaterials through optoelectronic control of the semiconductor carrier density. Metal-free subwavelength resonant semiconductor structures offer an alternative approach to create dynamic metamaterials. We present InAs plasmonic disk arrays as a viable resonant metamaterial at terahertz frequencies. Importantly, InAs plasmonic disks exhibit a strong nonlinear response arising from electric field-induced intervalley scattering, resulting in a reduced carrier mobility thereby damping the plasmonic response. We demonstrate nonlinear perfect absorbers configured as either optical limiters or saturable absorbers, including flexible nonlinear absorbers achieved by transferring the disks to polyimide films. Nonlinear plasmonic metamaterials show potential for use in ultrafast terahertz (THz) optics and for passive protection of sensitive electromagnetic devices.

References

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Citations

Oct 31, 2019·Advanced Materials·Xiaoguang ZhaoXin Zhang
Jun 17, 2016·Reports on Progress in Physics·Hou-Tong ChenNanfang Yu
Aug 27, 2016·Physical Review Letters·Zhiyuan SunM M Fogler
Jul 4, 2019·Nanomaterials·Lan WangZiqiang Yang
Dec 25, 2019·Applied Optics·Ruoxing WangWeimin Sun
Jun 6, 2019·Optics Express·Yue WangPengcheng Nie
Apr 18, 2019·Nature Communications·Shay Keren-ZurTal Ellenbogen
Mar 14, 2019·ACS Nano·Ashish ChananaBerardi Sensale-Rodriguez

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