Generation of Flat Terahertz Noise by Mixing Incoherent Light Fields

Terahertz (THz) noise sources play an irreplaceable role in testing THz devices and evaluating application systems, the flatness of their radio frequency (RF) spectra is important technical parameter. In this paper, a scheme for generating flat by mixing multiple filtered incoherent light fields proposed. A theoretical analysis conducted to investigate impact different spectral linewidths central wavelength differences on power RF spectrum flatness, optimized experimental obtained. The results show that proposed method can generate 280–380 GHz signal with ±0.5 dB simulation ±2.7 our experiments. This article provides excellent solution demand field.