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通过锯齿波调制实现两个外腔二极管激光器的光学锁相。

Optical phase-locking of two extended-cavity diode lasers by serrodyne modulation.

作者信息

Yim Sin Hyuk, Lee Sang-Bum, Kwon Taeg Yong, Shim Kyu Min, Park Sang Eon

出版信息

Appl Opt. 2019 Apr 1;58(10):2481-2484. doi: 10.1364/AO.58.002481.

DOI:10.1364/AO.58.002481
PMID:31045040
Abstract

We report the optical phase-locking of two extended-cavity diode lasers with a frequency difference of 6.9 GHz by serrodyne modulation. The bandwidth of the phase-locking loop is extended up to 9.5 MHz. The residual phase noise of the two phase-locked lasers reaches -130  / in the offset frequency range of 1.5 kHz to 9 kHz and below -120  / in the range of 150 Hz to 350 kHz, respectively. It is expected that the sensitivity limit of atom interferometers will be enhanced when the phase-locked lasers are used.

摘要

我们报告了通过锯齿波调制实现频率差为6.9 GHz的两台外腔二极管激光器的光学锁相。锁相环的带宽扩展至9.5 MHz。两台锁相激光器的残余相位噪声在1.5 kHz至9 kHz的偏移频率范围内分别达到-130 dBc/Hz，在150 Hz至350 kHz范围内低于-120 dBc/Hz。预计使用锁相激光器时原子干涉仪的灵敏度极限将得到提高。

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