Asynchronous modelocked Yb: KYW lasers for dual-comb spectroscopy
Asynchronous modelocked Yb: KYW lasers for dual-comb spectroscopy
复制标题
异步锁模 Yb：用于双梳光谱的 KYW 激光器
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
D. Reid
中科院分区：
文献类型：
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作者：
Z. Zhang;T. Gardiner;D. Reid
对于双梳光谱或异步光学采样，信号光学频率梳 (FC) 由用作本地振荡器的第二个 FC 进行探测 [1-2]。本振梳的重复率 frep,1 与信号梳 frep,2 的重复率略有偏移，它们之间的拍频构成射频 (RF) 频率梳，重复率为 Δ = frep,1−frep,2。在实验室环境中，重复率漂移可能非常慢，因此，一些早期实验是使用非稳定 FC 进行的 [2]。然而，更精确的测量需要具有稳定的相对重复率的FC。通过直接锁定到微波振荡器或将每个单独 FC 的两个齿锁定到两个稳定的连续波激光器，可以独立控制两个 FC 的重复率 [1][3]。在这里，我们报告了一种简化的锁定方案，其中两个 FC 的重复率差 Δ 直接稳定。
For dual-comb spectroscopy or asynchronous optical sampling, a signal optical frequency comb (FC) is probed by a second FC serving as a local oscillator [1–2]. The repetition rate of the local oscillator comb, frep,1, is slightly offset from that of the signal comb frep,2, and the beat between them constitutes a radio-frequency (RF) frequency comb, with a repetition rate of Δ = frep,1−frep,2. In a lab environment, the repetition-rate drift can be very slow, so, some early experiments were implemented with non-stabilized FCs [2]. However, more accurate measurement requires FCs with stabilized relative repetition rates. The repetition rates of the two FCs can be controlled independently, by locking directly to a microwave oscillator or locking two teeth of each individual FC to two stable continuous wave lasers [1][3]. Here, we report a simplified locking scheme, in which the repetition rate difference, Δ, of two FCs was directly stabilized.