Abstract
We report collinear strong-field terahertz (THz) generation from the organic crystal 4-N, N-dimethlamino-4-N-methyl-stilbazolium 2,4,6-trimethyl benzenesulfonate (DSTMS), driven by an industrial-grade ytterbium (Yb) laser operating at 1030 nm. The laser pulse duration is compressed from 800 to 90 fs by using a multi-pass-cell compressor. The output THz energy reaches 0.4 μJ, with a conversion efficiency of 0.22%. The spectrum covers over 0.1–6 THz with a peak electric field of 236 kV/cm. The phase matching condition and material absorption are illustrated. We demonstrate that a 1030 nm Yb-laser is used to pump organic crystal DSTMS for efficient THz generation in a simple collinear geometry, which provides a promising THz source based on an industrial-grade ultrafast laser.
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