Abstract

Present THz source technology, with peak fields > 1 GV/m, are realized by optical rectification (OR) of femtosecond pulses in organic crystals [1-3]. The main challenge for such source is the need of high-energy pump laser at non-standard wavelengths (1.2 – 1.5 µm) for the optimal phase matching conditions. Ti:sapphire-driven optical parametric amplifiers are the most common technique to shift the spectrum towards longer wavelengths. These converters, however, suffer for limited pulse energy and poor output beam quality which are detrimental for further upscaling of the THz sources.

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