172 citations · 576 across the 11 of their papers we have counts for
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Terahertz-driven Luminescence and Colossal Stark Effect in CdSe:CdS Colloidal Quantum Dots
Brandt C. Pein, Wendi Chang, Harold Y. Hwang +7
Unique optical properties of colloidal semiconductor quantum dots (QDs), arising from quantum mechanical confinement of charge within these structures, present a versatile testbed…
Terahertz Saturable Absorption in Superconducting Metamaterials
George R. Keiser, Jingdi Zhang, Xiaoguang Zhao +2
We present a superconducting metamaterial saturable absorber at terahertz frequencies. The absorber consists of an array of split ring resonators (SRRs) etched from a 100nm YBaCu3O…
Terahertz radiation-induced sub-cycle field electron emission across a split-gap dipole antenna
Jingdi Zhang, Xiaoguang Zhao, Kebin Fan +5
We use intense terahertz pulses to excite the resonant mode (0.6 THz) of a micro-fabricated dipole antenna with a vacuum gap. The dipole antenna structure enhances the peak amplitu…
Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials
Huseyin R. Seren, Jingdi Zhang, George R. Keiser +6
The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and fr…
Nonlinear terahertz metamaterials via field-enhanced carrier dynamics in GaAs
Kebin Fan, Harold Y. Hwang, Mengkun Liu +7
We demonstrate nonlinear metamaterial split ring resonators (SRRs) on GaAs at terahertz frequencies. For SRRs on doped GaAs films, incident terahertz radiation with peak fields of…