Enhancing terahertz radiation in slanting density plasma using Gaussian laser beams

The production of terahertz (THz) radiation is a swiftly advancing area with substantial ramifications for numerous scientific and technical uses, such as imaging, communication, and spectroscopy. This study examines the amplification of terahertz radiation in under-dense, collisional plasma when stimulated by Gaussian laser beams. We investigated the dynamics of the interaction between laser beams and non-uniform plasma using analytical analysis. The results of our study indicate that by optimizing the plasma and laser parameters, such plasma density, collisional frequency and transverse distance, we can significantly enhance the THz efficiency. The results illustrate the capability of Gaussian laser beams to customize plasma conditions and enhance the efficiency of THz radiation. This breakthrough creates new opportunities for the growth of high-power THz sources, which have potential uses in a range of high-resolution and non-invasive diagnostic approaches.