低时序抖动锁模光纤激光器及其在双梳绝对距离测量中的应用综述

IF 2.7
Haosen Shi , Youjian Song , Runmin Li, Yuepeng Li, Hui Cao, Haochen Tian, Bowen Liu, Lu Chai, Minglie Hu
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引用次数: 28

摘要

被动锁模光纤激光器发射飞秒脉冲串,具有优异的短期稳定性。室温下自由运行的飞秒掺铒光纤激光器在高傅立叶频率下的量子限时抖动明显小于1飞秒。具有超低时序抖动的超短脉冲序列使基于双梳实现的绝对飞行时间测量成为可能,双梳实现通常由一对飞秒激光器产生的光学频率梳组成。双梳结构通常可以实现亚微米精度和kHz更新率的无死区绝对距离测量,这对于许多精密制造应用很有希望,从微电子轮廓测量中流行的大型阶梯结构测量到大型航空航天制造和造船中的三坐标测量。本文首先综述了亚飞秒精度定时抖动的表征方法和超低定时抖动锁模光纤激光器的设计方法。然后,我们从工作原理、实验实现和测量精度方面概述了最先进的双梳绝对测距技术。最后,讨论了在高更新速率下,量子限时抖动对双梳测距精度的影响。提出了基于超低抖动飞秒光纤激光器的高精度双梳测距仪设计思路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Review of low timing jitter mode-locked fiber lasers and applications in dual-comb absolute distance measurement

Passively mode-locked fiber lasers emit femtosecond pulse trains with excellent short-term stability. The quantum-limited timing jitter of a free running femtosecond erbium-doped fiber laser working at room temperature is considerably below one femtosecond at high Fourier frequency. The ultrashort pulse train with ultralow timing jitter enables absolute time-of-flight measurements based on a dual-comb implementation, which is typically composed of a pair of optical frequency combs generated by femtosecond lasers. Dead-zone-free absolute distance measurement with sub-micrometer precision and kHz update rate has been routinely achieved with a dual-comb configuration, which is promising for a number of precision manufacturing applications, from large step-structure measurements prevalent in microelectronic profilometry to three coordinate measurements in large-scale aerospace manufacturing and shipbuilding. In this paper, we first review the sub-femtosecond precision timing jitter characterization methods and approaches for ultralow timing jitter mode-locked fiber laser design. Then, we provide an overview of the state-of-the-art dual-comb absolute ranging technology in terms of working principles, experimental implementations, and measurement precisions. Finally, we discuss the impact of quantum-limited timing jitter on the dual-comb ranging precision at a high update rate. The route to high-precision dual-comb range finder design based on ultralow jitter femtosecond fiber lasers is proposed.

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