What are the current results on nonlinear emission?
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Nonlinear emission has been observed in various systems. In arrays of plasmonic nanoparticles, nonlinear emission from molecular layers strongly coupled to extended light fields has been demonstrated, resulting in the formation of hybrid light-matter states known as plasmon-exciton polaritons (PEPs) . Parametric nonlinear optical processes have been realized in two-dimensional transition-metal dichalcogenides (TMDs), leading to the formation of phase-matched idler states and nonlinear amplification . Nonlinear thermal emission in the visible-NIR spectrum has been achieved through a pump-driven nonlinear upconversion in a quadratic nonlinear medium, enabling visible thermometry using traditional optical cameras . Additionally, the collision of laser-induced plasma wakefields has been found to generate high-power electromagnetic emission at the second harmonic of the plasma frequency, offering potential for creating a source of tunable narrow-band coherent radiation in the terahertz frequency range .
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| The paper discusses the theory and evaluation of the angular distribution and total generation efficiency of second harmonic radiation in the case of an arbitrary collision angle. It also mentions that theoretical predictions are qualitatively confirmed by particle-in-cell simulations. However, it does not provide specific current results on nonlinear emission. | |
| The paper discusses the theory and evaluation of the angular distribution and total generation efficiency of second harmonic radiation in the case of an arbitrary collision angle. It also mentions that theoretical predictions are qualitatively confirmed by particle-in-cell simulations. However, it does not provide specific current results on nonlinear emission. | |
| The current results on nonlinear emission in the provided paper demonstrate the formation of a phase-matched idler state and nonlinear amplification in a WS2 monolayer microcavity, which preserves the valley population and survives up to room temperature. | |
| The current results on nonlinear emission show that the emission frequency is solely determined by the relaxation of exciton polaritons through vibrational quanta in the molecules. The emission has an undefined momentum due to structural imperfections. | |
| The current results on nonlinear emission include the experimental demonstration of broadband nonlinear thermal emission in the visible-NIR spectrum using a quadratic nonlinear medium. |
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