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Tunable Room Temperature Thz Sources Based On Nonlinear Mixing In A Hybrid Optical And Thz Micro-Ring Resonator, Raju Sinha, Mustafa Karabiyik, Chowdhury Al-Amin, Phani Kiran Vabbina, Durdu O. Guney, Nezih Pala

Open Access Publishing Fund

We propose and systematically investigate a novel tunable, compact room temperature terahertz (THz) source based on difference frequency generation in a hybrid optical and THz micro-ring resonator. We describe detailed design steps of the source capable of generating THz wave in 0.5–10 THz with a tunability resolution of 0.05 THz by using high second order optical susceptibility (x(2)) in crystals and polymers. In order to enhance THz generation compared to bulk nonlinear material, we employ a nonlinear optical micro-ring resonator with high-Q resonant modes for infrared input waves. Another ring oscillator with the same outer radius underneath the nonlinear ring …