使用商用自由运转激光器的鲁棒异步光学采样太赫兹光谱
Robust asynchronous optical sampling terahertz spectroscopy using commercially available free-running lasers
AI总结：
本研究提出使用商用自由运转Ti:Sapphire激光器的ASOPS太赫兹光谱，通过后处理算法校正抖动，实现了82 MHz高分辨率与2.5 THz宽带测量，并验证了60小时以上的长期可靠运行。
摘要：
本研究展示了使用商用Ti:Sapphire激光器且不稳定重复频率的异步光学采样（ASOPS）太赫兹光谱。我们使用倍增的重复频率差作为校准信号的后处理算法成功校正了抖动，从而实现了高光谱分辨率（82 MHz）的宽带（2.5 THz）光谱。基于自由运转激光器装置和宽带电路的抖动校正鲁棒性在变化的温度下进行了严格检验，从而证明了超过60小时的可靠长期运行。本研究扩展了ASOPS太赫兹时域光谱的适用性。
英文摘要：
This study presents asynchronous optical sampling (ASOPS) terahertz spectroscopy using commercially available Ti:Sapphire lasers without stabilizing repetition frequency. Our postprocessing algorithm using the multiplied repetition frequency difference as the calibration signal successfully corrected the jitter, thereby allowing broadband (2.5 THz) spectroscopy with a high spectral resolution (82 MHz). The robustness of the jitter correction based on the free-running laser setup and broadband electric circuits was rigorously examined under varying temperatures, thereby demonstrating reliable long-term operations over 60 h. This study expands the applicability of the ASOPS terahertz time-domain spectroscopy.
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