Efficient semiconductor source of multicycle terahertz pulses using intensity-modulated pump

Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies

“…27 Several schemes have been proposed and simulated to increase the IR/THz conversion efficiency up to 5% and even 10%, but they have not been experimentally demonstrated by now. [28][29][30] This option of THz generation is the one chosen for the AXSIS project. 4,27 A second type of THz pulse generation technique is the one used in the gyrotron devices, based on electron cyclotron resonance in a circular cavity.…”