Accelerator Sources for THz Science: A Review

Experimental Demonstration of Enhanced Self-Amplified Spontaneous Emission by an Optical Klystron

“…Oscillator FELs were realized in an extremely wide spectral range, from the THz [9,10] to the VUV [11][12][13][14][15][16][17][18]. Progress in the technology of FEL oscillators was provided by the optical klystron configuration [19,20].…”

AREAL test facility for advanced accelerator and radiation source concepts

“…The topic of terahertz radiation has become of increasing importance in recent years with a wide range of potential application in the field of life, materials and environmental sciences [8][9][10]. The ALPHA station for THz FEL, based on self-amplified spontaneous emission (SASE) principle [11,12], is one of the promising outlooks of the AREAL facility.…”

Towards Intense THz Spectroscopy on Water: Characterization of Optical Rectification by GaP, OH1, and DSTMS at OPA Wavelengths

“…The first exploits current effects, i.e., the fact that a time-varying charge current can act as a radiation source [27]. This basic concept holds for antennas [28][29][30][31][32][33], which are widely used in conjunction with non-amplified pulsed lasers to perform terahertz time-domain spectroscopy, and for particle accelerators, where relativistic electron beams are deflected by magnets and thereby emit radiation of tunable wavelength [34][35][36] that can cover the THz range [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. While accelerators can cover a large frequency range, these complex machines are often optimized for a certain range because optical elements have limited bandwidths [53].…”