Advancements in efficient Terahertz generation techniques for diverse applications in spectroscopic studies

The utilization of Terahertz (THz) radiation has garnered considerable interest in recent times owing to its wide-ranging applications in varied domains such as communication, imaging, and spectroscopy. This work specifically examines the production of THz radiation by utilizing Sinh-Gaussian laser pulses. The Sinh-Gaussian pulse has a distinct profile that has shown potential attributes for energy effective THz synthesis. In the present study, two Sinh-Gaussian pulses are considered to propagate through a uniform underdense homogenous collisional plasma. Nonlinearity produced by two pulses generates a nonlinear current density which further generates the THz waves. The effect of decentred parameter and collisional frequency on THz efficiency are analytically investigated in this study. Our study reveals that with the increase in decentred parameter or decrease in collisional frequency, energy efficiency of generated THz can be enhanced. The distinctive attributes of this pulse shape present new opportunities for optimizing THz sources, hence facilitating progress in ultrafast optics and terahertz technology.