We report on a table-top, high-power, terahertz (THz) solid-state emitter driven by few-cycle near-infrared pulses at 16 MHz repetition rate in gallium phosphide (GaP) crystals. Two external nonlinear multi-pass cells are used to shorten the output of a home-built, 100 W, 265 fs, 6.2 μ J Yb:YAG thin-disk oscillator, operating at 1030 nm, to 18 fs with 3.78 μ J pulse energy. The broadband spectrum of the THz driver allowed for the extension of the THz cutoff frequency to 5.7 THz at the dynamic range of 10 4 . By employing the high-power Yb:YAG thin-disk oscillator, the low efficiency of the THz generation is circumvented, resulting in the generation of up to 100 μ W, multi-octave THz pulses at 5 THz cutoff frequency in a 2 mm thick GaP crystal.

中文翻译：

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Yb：YAG薄盘振荡器驱动的宽带太赫兹固态发射器

我们报告了一种台式高功率太赫兹（THz）固态发射器，该发射器由磷化镓（GaP）晶体中以16 MHz重复频率的几个周期的近红外脉冲驱动。两个外部非线性多通单元用于将工作频率为1030 nm的100 W，265 fs，6.2μJ Yb：YAG薄盘振荡器的输出功率缩短到18 fs（3.78μJ脉冲能量） 。THz驱动器的宽带频谱允许在10 4的动态范围内将THz截止频率扩展到5.7 THz。通过使用高功率Yb：YAG薄盘振荡器，可以避免太赫兹频率的低效率，从而在2 mm厚的5 THz截止频率下产生高达100μW的多倍频程THz脉冲。 GaP晶体。