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- W4387246619 abstract "Abstract In this paper, a nonlinear optical cascaded difference frequency generation (CDFG) model based on double rapid adiabatic passage (DRAP) technique is established, and a theoretical scheme for generating THz waves based on the above model is proposed. In this model, when the incident signal laser interacts with a pump laser, the signal laser can be completely converted into the output laser by special processing of the coupling wave equation and making reasonable assumptions. Numerical simulation results show that THz waves with a center frequency of 260 GHz can be obtained. The maximum quantum conversion efficiency of the signal laser to THz waves is about 43.4%. Under the premise of keeping the wavelength of the pump laser unchanged, the tunable THz waves of 0.26-2.94 THz can be obtained when tuning the wavelength of the signal laser to change in the range of 1.054-1.064 μm. Compared with the scheme using STIRAP technique, the scheme can still generate terahertz waves during the application of a pump laser to two simultaneous DFG processes, and the intensity of the pump laser can be reduced from Gigawatt level to Megawatt level. This scheme is robust to the temperature variation and provides a new method for generating terahertz wave band for high-speed wireless transmission." @default.
- W4387246619 created "2023-10-03" @default.
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- W4387246619 date "2023-10-02" @default.
- W4387246619 modified "2023-10-03" @default.
- W4387246619 title "Generation of terahertz waves based on nonlinear frequency conversion with double rapid adiabatic passage technique" @default.
- W4387246619 doi "https://doi.org/10.1088/1361-6463/acff07" @default.
- W4387246619 hasPublicationYear "2023" @default.
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