频谱分析仪
激光线宽
光学
连贯性(哲学赌博策略)
外差(诗歌)
外差探测
噪声频谱
物理
噪音(视频)
激光器
降噪
计算机科学
声学
人工智能
图像(数学)
量子力学
作者
Simon Thorndahl Thomsen,Mónica Far Brusatori,Niklas Hedegaard Arent,Rakesh Ranjan Kumar,Nicolas Volet
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-10-31
卷期号:48 (24): 6372-6372
被引量:2
摘要
We demonstrate a refined way to extract the frequency noise (FN) spectrum of lasers by tailoring the delay in a conventional delayed self-heterodyne setup to sub-coherence lengths. The method achieves direct proportionality between electrical spectrum analyzer traces and the FN spectrum, which provide the intrinsic linewidth of the lasers. This proposed method is validated by comparing the FN spectrum with that obtained from a commercial frequency noise analyzer. The method provides a cost-effective alternative for FN measurements, which also requires minimal post-processing as compared to the state-of-the-art.
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