Colloquium:: Femtosecond optical frequency combs
Colloquium:: Femtosecond optical frequency combs
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DOI：
10.1103/revmodphys.75.325
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发表时间：
2003-01-01
影响因子：
44.1
通讯作者：
Ye, J
中科院分区：
文献类型：
--
作者：
Cundiff, ST;Ye, J
近年来，精密激光稳频技术与锁模超快激光技术取得了显着的协同效应。这导致了对锁模激光产生的频谱的控制，锁模激光由规则的尖锐线条组成。因此，这种受控锁模激光器就是“飞秒光学频率梳发生器”。对于足够宽的梳子，可以确定所有梳线的绝对频率。这种能力使光学频率测量和合成发生了革命性的变化。它也是最近利用光学频率转换的原子钟演示的基础。此外，它还对时间域应用产生了影响，包括从两个独立的激光器合成单个脉冲。在这次座谈会中，我们首先回顾了锁模激光器的频域描述以及脉冲相位和频谱之间的关系，以便为理解如何确定和控制绝对频率提供基础。在此基础上，讨论了其在光学频率测量和合成以及光学原子钟中的应用。接下来是对梳子技术如何影响和将如何影响时域实验的简要概述。
Recently there has been a remarkable synergy between the technologies of precision laser stabilization and mode-locked ultrafast lasers. This has resulted in control of the frequency spectrum produced by mode-locked lasers, which consists of a regular comb of sharp lines. Thus such a controlled mode-locked laser is a "femtosecond optical frequency comb generator." For a sufficiently broad comb, it is possible to determine the absolute frequencies of all of the comb lines. This ability has revolutionized optical frequency metrology and synthesis. It has also served as the basis for the recent demonstrations of atomic clocks that utilize an optical frequency transition. In addition, it is having an impact on time-domain applications, including synthesis of a single pulse from two independent lasers. In this Colloquium, we first review the frequency-domain description of a mode-locked laser and the connection between the pulse phase and the frequency spectrum in order to provide a basis for understanding how the absolute frequencies can be determined and controlled. Using this understanding, applications in optical frequency metrology and synthesis and optical atomic clocks are discussed. This is followed by a brief overview of how the comb technology is affecting and will affect time-domain experiments.