Abstract

High-energy terahertz pulses are produced by optical rectification (OR) in organic crystals 4-dimethylamino-$N$-methyl-4-stilbazolium tosylate (DAST) and 4-$N$, $N$-dimethylamino-$4^{\prime }$-$N^{\prime }$-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate (DSTMS) by a Ti:sapphire amplifier system with 0.8 μm central wavelength. The simple scheme provides broadband spectra between 1 and 5 THz, when pumped by a collimated 60 fs near-IR pump pulse, and it is scalable in energy. Fluence-dependent conversion efficiency and damage threshold are reported, as well as optimized OR at visible wavelengths.

© 2013 Optical Society of America

Optical properties of 4-N,N-dimethylamino-4^′-N^′-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate crystals at terahertz frequencies

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Generation of terahertz pulses through optical rectification in organic DAST crystals: theory and experiment

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High efficiency THz generation in DSTMS, DAST and OH1 pumped by Cr:forsterite laser

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