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5 March 2021 Broadly tunable THz radiation through nonlinear microresonator
Ping Keng Lu, Wenting Wang, Deniz Turan, Abhinav Kumar Vinod, James F. McMillan, Heng Zhou, Hao Liu, Mingbin Yu, Dim-Lee Kwong, Mona Jarrahi, Chee-Wei Wong
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Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 116850Q (2021) https://doi.org/10.1117/12.2578800
Event: SPIE OPTO, 2021, Online Only
Abstract
The degenerate mode interaction can possess a clear avoided mode crossing to manipulate the cavity mode spectra by a mode-splitting process under a strong mode-coupling condition in high-Q microresonators. Here, the mode splitting strength can be changed by controlling the pump-resonance effective detuning in a dispersion-managed Si3N4 microresonator through a differential thermo-optic effect. The splitting mode can locally facilitate the frequency matching in normal dispersion microresonators so that the tunable parametric oscillation can be observed by tuning pump-resonance detuning. A broadly tunable THz wave radiation is generated after injecting the tunable parametric oscillation into a bias-free photomixer at room temperature.
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Ping Keng Lu, Wenting Wang, Deniz Turan, Abhinav Kumar Vinod, James F. McMillan, Heng Zhou, Hao Liu, Mingbin Yu, Dim-Lee Kwong, Mona Jarrahi, and Chee-Wei Wong "Broadly tunable THz radiation through nonlinear microresonator", Proc. SPIE 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV, 116850Q (5 March 2021); https://doi.org/10.1117/12.2578800
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KEYWORDS
Terahertz radiation
Microresonators
Optical parametric oscillators
Optical resonators
Phase matching
Photons
Precision optics
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