标题： 激光驱动的高平均功率亚毫米波源 显示英文标题

标题： Laser-driven few-cycle Terahertz sources with high average power

摘要： 超快激光驱动的太赫兹源在越来越多的科学和技术应用中日益受到欢迎。 然而，许多领域仍然严重受限于这些源通常较低的平均功率，这限制了众多测量中的速度、信噪比和动态范围。 相反，过去二十年中，基于镱激光器的高平均功率超快激光技术取得了显著进展，使数百瓦到千瓦的平均功率可供该领域用于驱动太赫兹源。 这开启了高平均功率激光驱动太赫兹时域光谱学这一新兴领域，该领域有望彻底改变太赫兹时域系统的应用。 在本文中，我们讨论这一新兴领域，并强调利用高功率基于镱的超快激光作为驱动器的宽带太赫兹源的最新进展，这些源的平均功率正接近瓦级。 我们讨论迄今为止探索的各种方法、当前面临的挑战、扩展前景以及未来的研究领域，这些将加速它们在应用中的实现。 显示英文摘要

摘要： Ultrafast laser-driven terahertz sources are gaining in popularity in an increasingly wide range of scientific and technological applications. However, many fields continue to be severely limited by the typically low average power of these sources, which restricts speed, signal-to-noise ratio, and dynamic range in numerous measurements. Conversely, the past two decades have seen spectacular progress in high average power ultrafast laser technology based on Ytterbium lasers, rendering hundreds of watts to kilowatts of average power available to this community to drive THz sources. This has opened the young field of high-average-power laserdriven THz time-domain spectroscopy, which holds the potential to revolutionize the applications of THz time-domain systems. In this perspective article, we discuss this young field and emphasize recent advancements in broadband terahertz sources utilizing high-power Yb-based ultrafast lasers as drivers, which are nearing watt-level average power. We discuss various approaches explored thus far, current challenges, prospects for scaling, and future research areas that will accelerate their implementation in applications.