Laser frequency locking with second-harmonic demodulation

Lishuang Feng; Haicheng Li; Junjie Wang; Yinzhou Zhi; Yichuang Tang; Chenglong Li

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Laser frequency locking with second-harmonic demodulation

机译：激光频率锁定，具有二次谐波解调

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An external-optical-cavity-based laser frequency-locking method with second-harmonic demodulation was proposed, analyzed, and demonstrated. The second-harmonic component of the cavity output was demodulated to feed back to the frequency-locking loop, resulting in a high sensitivity, great carrier suppression, and large modulation bandwidth. The experimental demodulation curve was consistent with the simulation result. A distributed feedback fiber laser was then locked using this technique. A carrier wave suppression ratio of -67 dB and a laser frequency noise floor of 1 Hz/(Hz)~(1/2) level above 1 Hz were achieved. This technique has great potential to be used in resonator optic gyroscopes.

机译：提出，分析和论证了一种基于外腔的具有二次谐波解调的激光锁频方法。谐振腔输出的二次谐波分量被解调以反馈到锁频环，从而导致高灵敏度，出色的载波抑制和大的调制带宽。实验解调曲线与仿真结果吻合。然后使用该技术锁定分布式反馈光纤激光器。实现了-67 dB的载波抑制比和高于1 Hz的1 Hz /（Hz）〜（1/2）的激光频率本底噪声。该技术具有在共振光学陀螺仪中使用的巨大潜力。

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《Applied optics》 |2014年第29期|共6页
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Lishuang Feng; Haicheng Li; Junjie Wang; Yinzhou Zhi; Yichuang Tang; Chenglong Li;
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1. Laser frequency locking with second-harmonic demodulation [J] . Lishuang Feng, Haicheng Li, Junjie Wang, Applied optics . 2014,第29期

机译：激光频率锁定，具有二次谐波解调
2. Pound-Drever-Hall laser frequency locking technique based on orthogonal demodulation [J] . Su Juan, Jiao Mingxing, Jiang Fei Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic . 2018,第期

机译：基于正交解调的磅 - 防钵厅激光频率锁定技术
3. Demodulation of multi-gigahertz frequency-modulated optical signals in an injection-locked distributed feedback laser oscillator [J] . Nakajima H. Electronics Letters . 1990,第15期

机译：注入锁定分布式反馈激光振荡器中多千兆赫调频光信号的解调
4. High speed demodulation in circular ranging optical coherence tomography using a LiNbO_3 phase modulator and a stretched pulse active mode-locked frequency comb laser at 1.3μm [C] . Norman Lippok, B. E. Bouma, Benjamin J. Vakoc Conference on Optical Coherence Imaging Techniques and Imaging in Scattering Media . 2019

机译：使用LINBO_3相位调制器和拉伸脉冲有源模式锁定频率梳激光为1.3μm的圆形测距光学相干断层扫描的高速解调
5. Heterodyne interferometry using digital phase demodulation and injection locked lasers for NDE. [D] . Smith, James Arthur. 1995

机译：使用数字相位解调和NDE注入锁定激光器进行外差干涉测量。
6. Optical Frequency Metrology of an Iodine-Stabilized He-Ne Laser Using the Frequency Comb of a Quantum-Interference-Stabilized Mode-Locked Laser [O] . Ryan P. Smith, Peter A. Roos, Jared K. Wahlstrand, 2007

机译：使用量子干扰稳定锁模激光器的频率梳对碘稳定的He-Ne激光器的光频率计量
7. Spectral Purity and Sources of Noise in Femtosecond-Demodulation Terahertz Sources Driven by Ti: Sapphire Mode-Locked Lasers [O] . J. R. Demers, Tom M. Goyette, Kyle B. Ferrio, 2015

机译：Ti：蓝宝石锁模激光器驱动的飞秒 - 解调太赫兹光源的光谱纯度和噪声源
8. Spectral Purity and Sources of Noise in Femtosecond Demodulation THz Sources Driven by Ti:Sapphire Mode-Locked Lasers. Appendix 1: High Resolution Sub-Millimeter Spectroscopy Using Mode-Locked Laser Driven Electro-Optic Antennas [R] . Guenther, B. D. 2000

机译：Ti：蓝宝石锁模激光器驱动的飞秒解调THz光源的光谱纯度和噪声源。附录1：使用锁模激光驱动的电光天线的高分辨率亚毫米光谱

Laser frequency locking with second-harmonic demodulation

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