Harmonic frequency locking and tuning of comb frequency spacing through optical injection.
Harmonic frequency locking and tuning of comb frequency spacing through optical injection.
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DOI：
10.1364/oe.27.036976
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发表时间：
2019-07
期刊：
影响因子：
3.8
通讯作者：
K. Shortiss;B. Lingnau;F. Dubois;B. Kelleher;F. Peters
中科院分区：
文献类型：
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作者：
K. Shortiss;B. Lingnau;F. Dubois;B. Kelleher;F. Peters
我们表明，实验和理论上，从激光器注入光频梳可以经历两个不同的锁定机制，这两个降低输出光梳的频率间隔。我们报告说，对于某些失谐和相对注入强度，从激光弛豫振荡可以成为无阻尼和锁定到合理的频率的光学梳间距，创造额外的梳音调的非线性动力学注入激光。我们还研究了从激光器在注入梳状线之间失谐时的频率锁定，这将使从激光器的频率增加到梳状线上。我们的结果表明了α参数和锁定态稳定性的影响，并指出了弛豫振荡的频率如何影响这两种锁定机制。这些光学锁定机制可以应用于再生或倍增光梳。
We show, both experimentally and theoretically, that a slave laser injected with an optical frequency comb can undergo two distinct locking mechanisms, both of which decrease the output optical comb's frequency spacing. We report that, for certain detuning and relative injection strengths, slave laser relaxation oscillations can become undamped and lock to rational frequencies of the optical comb spacing, creating extra comb tones by nonlinear dynamics of the injected laser. We also study the frequency locking of the slave laser at detunings in between the injected comb lines, which add the slave laser's frequency to the comb. Our results demonstrate the effect of the α parameter and stability of the locked states and indicate how the frequency of the relaxation oscillations affect both of these locking mechanisms. These optical locking mechanisms can be applied to regenerate or multiply optical combs.