量子电子学报2024，Vol.41Issue(5)：772-779,8.DOI:10.3969/j.issn.1007-5461.2024.05.007
结合光电负反馈和模式清洁器的噪声抑制系统
Noise suppression system combining photoelectric negative feedback and mode cleaner
摘要
Abstract
The effective suppression of laser noise is the basis of precision measurement research,and especially,it is required for modern quantum information science to reach shot noise limit in light field.A noise suppression system combining photoelectric negative feedback and mode cleaner is studied in this work.Based on the sideband model and Langevin equation,the noise spectrum of the output light field of the noise suppression system is analyzed,and the effects of the transmittance,feedback gain of the photoelectric negative feedback loop and the cavity linewidth of the optical mode cleaner on the noise suppression level are discussed.The results show that the system can not only effectively suppress the intensity noise at high frequency to reach the limit of shot noise,but also reduce the intensity noise at specific frequencies.In addition,the introduction of bandpass filter can further extend the level and bandwidth of noise suppression.The results provide direct reference and necessary basis for experimental research.关键词
量子光学/强度噪声抑制/光电负反馈/模式清洁器Key words
quantum optics/intensity noise suppression/photoelectric negative feedback/mode cleaner分类
数理科学引用本文复制引用
吴紫伊,雷兴,闫智辉,贾晓军..结合光电负反馈和模式清洁器的噪声抑制系统[J].量子电子学报,2024,41(5):772-779,8.基金项目
国家自然科学基金(62122044,61925503,11904218,12147215,62135008),国家重点研发计划(2022YFA1404500),山西省高等学校科技创新项目(2019L0794),山西省"1331工程"重点学科建设计划 （62122044,61925503,11904218,12147215,62135008）
