Role of pulse shaping in control of focus and intensity of terahertz radiation

Publication date: Available online 10 June 2019Source: Physics Letters AAuthor(s): Reenu Gill, Hitendra K. MalikAbstractIn this work, we uncover the role of lasers pulse shaping for controlling the terahertz peaks with their separation in addition to their intensities. We have developed a mathematical model for obtaining the amplitude, frequency, and power of the emitted Terahertz radiation for the lasers whose shape is tailored based on the index and skew parameter. Then the results are compared with the case of Gaussian laser pulse in collisional plasma. We optimize the process by applying magnetic field and by varying the index of the lasers for compensating the negative influence of collisions on the THz emission. Specifically the effect of laser beam width, magnetic field and collision frequency is investigated on the electric field of the terahertz radiation and the efficiency of the mechanism.

Source: Physics Letters A - June 11, 2019 Category: Physics Source Type: research