Wenqian Ronny Huang

TL;DR: Terahertz-driven accelerating structures enable high-gradient electron/proton accelerators with simple accelerating structures, high repetition rates and significant charge per bunch that hold great potential to have a transformative impact for free electron lasers, linear colliders, ultrafast electron diffraction, X-ray science and medical therapy with X-rays and electron beams.

TL;DR: The results confirm the advantage of using cryogenic cooling of the lithium niobate crystal that significantly reduces the THz absorption, enabling the scaling of THz pulse energies to the millijoule level via OR.

TL;DR: The AXSIS project at CFEL in Hamburg develops a compact, fully coherent, THz-driven atto-second X-ray source based on coherent inverse Compton scattering off a free-electron crystal, to outrun radiation damage effects due to the necessary highX-ray irradiance required to acquire diffraction signals.

TL;DR: It is numerically shown that the large experimentally observed cascaded frequency down-shift and spectral broadening (cascading effects) of the optical pump pulse is a direct consequence of THz generation, and the exclusion of these cascading effects in modeling OR, leads to a significant overestimation of the Optical-to-THz conversion efficiency.

TL;DR: A temperature dependent measurement of refractive index and absorption coefficient on a 6.0 mol% MgO-doped congruent lithium niobate wafer by using a THz time-domain spectrometer (THz-TDS) is performed, crucial for designing an optimum tilted pulse front setup based on lithium Niobate crystals.