Generation of 13.5-mJ Terahertz Radiation from Lithium Niobate Materials

However, these practical uses are constrained by the absence of high intensity, high efficiency, high beam quality, and stable solid-state THz light sources. Here, a generation of single-cycle 13.5-mJ extreme THz pulses from cryogenically cooled lithium niobate crystals and a 1.2% energy conversion efficiency from 800 nm to THz are demonstrated experimentally using the tilted pulse front technique driven by a home-built 30-fs, 1.2-Joule Ti:sapphire laser amplifier.