2016/02/25 by Sergio Carbajo, Anne-Laure Calendron, Carbajo, Sergio +15
Engineering · Physics and Astronomy · #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Optics (physics.optics) #Superconducting and THz Device Technology #Terahertz technology and applications
paper · pdf · doi:10.48550/arxiv.1602.08136
openalex publication_date 2016/02/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We refine the method towards extraction of sub-cycle transients in the 0.1-1 THz frequency (mm-wavelength) range from optical rectification in lithium niobate using tilted pulse fronts. Our scheme exploits previously unexplored spatio-temporal shaping of the pump pulses, resulting in highly efficient and near diffraction-limited sub-THz transients reaching 0.2 GV/m electric field strengths in free-space using only mJ-level optical ps-pulses. We address experimentally and theoretically the means to producing above-GV/m relativistic sub-THz transients with proper beam confinement and under moderate pumping conditions, thereby bringing widespread access to strong-field and nonlinear terahertz applications and devices.