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超短脉冲太赫兹(THz)辐射源在太赫兹波技术领域一直占有重要地位。随着太赫兹波技术在物理、化学、生物医学、成像、传感以及毒品检测等众多科研和技术领域应用的深入,对高效、高功率、小型化超短脉冲太赫兹辐射源的研究已逐步成为研究热点。其中应用光纤飞秒激光技术是最行之有效的研究方法,使用光子晶体光纤飞秒激光放大系统作为激发源,采用块状GaP非线性晶体作为THz发射器,通过优化超短脉冲THz辐射的产生技术,入射在晶体上的抽运功率在17W的情况下,获得平均功率为150μW的超短脉冲
Ultra-short pulse THz radiation sources have always played an important role in terahertz wave technology. With the deepening application of terahertz wave technology in numerous scientific and technological fields such as physics, chemistry, biomedicine, imaging, sensing and drug detection, the research on high efficiency, high power and miniaturized ultrashort pulsed terahertz radiation sources has been gradually carried out Become a research hot spot. The application of optical fiber femtosecond laser technology is the most effective research method. The photonic crystal fiber femtosecond laser amplification system is used as the excitation source, and the bulk GaP nonlinear crystal is used as THz emitter. By optimizing the generation of ultra-short pulse THz radiation Technology, the pumping power incident on the crystal in the case of 17W, to obtain an average power of 150μW ultrashort pulse