论文标题
宽带Terahertz波从液态金属发射
Broadband Terahertz Wave Emission from Liquid Metal
论文作者
论文摘要
数十年来，已将金属作为Terahertz来源进行了研究。最近的研究表明，金属在产生强烈激光脉冲激发的极高THz脉冲能量方面的潜力。为了避免激光脉冲引起的金属表面碎片，在这里，我们报告了宽带Terahertz波发射的结果，该频率是通过亚皮秒激光脉冲激发的流动液体金属线的发射。从液体镀锌线中发出的THZ信号显示出更强的场，具有更宽的带宽，与在相同的光激发条件下的水信号相比。我们的初步研究表明，液体金属有可能作为高度重复速率的强烈激光器的有效和强大的THZ来源。
Metals have been studied as terahertz sources for decades. Recent research has shown the potential of metals in generating extremely high THz pulse energy excited by intense laser pulses. To avoid the metal surface debris caused by laser pulses, here, we report the results of the broadband terahertz wave emission from a flowing liquid metal line excited by sub-picosecond laser pulses. The THz signal emitted from the liquid gallium line shows stronger field with broader bandwidth comparing with the signal from water under the identical optical excitation conditions. Our preliminary study suggests that the liquid metals have the potential to serve as efficient and powerful THz sources for the intense lasers with a high repetition rate.
