基于法布里-珀罗埃塔隆的多波长窄间距激光稳频技术。

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
Micromachines Pub Date : 2024-10-18 DOI:10.3390/mi15101269
Ju Wang, Ye Gao, Jinlong Yu, Hao Luo, Xuemin Su, Shiyu Zhang, Ruize Zhang, Chuang Ma
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引用次数: 0

摘要

经典的频率稳定激光器已经实现了高频率稳定性和可重复性;然而,其广泛的波长间隔限制了其在各种应用场景中的实用性。本研究介绍了一种新型稳频激光器方案,它将法布里-珀罗等离子体(FPE)与数字控制技术和波长调制技术相结合。FPE 的特点是在最小频率间隔内有多个传输峰值,可为不同的激光器提供稳定的频率参考,从而增强了系统的灵活性和适应性。误差信号来自 FPE 传输曲线的一阶微分。当激光器的中心频率偏离参考频率时,反馈输出信号中会出现 180° 的相位差,从而确定了相应的频率控制方向。实验结果表明,这种稳定方案能有效地将激光器的输出波长锁定在 FPE 的不同传输峰值频率上,从而实现 25 GHz 的波长间隔。频率稳定性在二级时间尺度上提高了两个数量级,保持在数百千赫的范围内,相当于 10-10 的频率稳定水平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi-Wavelength Narrow-Spacing Laser Frequency Stabilization Technology Based on Fabry-Perot Etalon.

Classical frequency-stabilized lasers have achieved high-frequency stability and reproducibility; however, their extensive wavelength spacing limits their utility in various scenarios. This study introduces a novel frequency-stabilized laser scheme that integrates a Fabry-Perot etalon (FPE) with digital control technology and wavelength modulation techniques. The FPE, characterized by multiple transmission peaks at minimal frequency intervals, provides stable frequency references for different lasers, thereby enhancing the system's flexibility and adaptability. An error signal is derived from the first-order differentiation of the FPE's transmission curve. A 180° phase difference was observed in the feedback output signal when the laser's central frequency diverged from the reference, determining that the direction of the frequency control was accordingly determined.Employing feedback control, the laser's output frequency is stabilized at the transmission peak frequency of the FPE. Experimental results demonstrate that this stabilization scheme effectively locks the laser's output wavelength to different transmission peak frequencies of the FPE, achieving 25 GHz wavelength spacing. The frequency stability is improved by two orders of magnitude on a second-level timescale, maintained within hundreds of kHz, equating to a frequency stability level of 10-10.

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来源期刊
Micromachines
Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION
CiteScore
5.20
自引率
14.70%
发文量
1862
审稿时长
16.31 days
期刊介绍: Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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