积分球冷原子钟探测光功率自动稳定实验研究
Probe Laser Power Stabilization for Integrated Sphere Cold Atom Clock
查看参考文献10篇
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文摘
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建立了微瓦量级的激光功率自动稳定实验装置,通过自动反馈控制声光调制器的衍射效率,实现了激光功率的自动稳定。激光功率稳定后,激光相对强度噪声得到有效抑制,接近散弹噪声极限,激光功率的长期稳定度优于2×10~(-5)(1000s)。推导了功率自动稳定系统的环路方程,分析了激光功率稳定环路对相对强度噪声的抑制作用。稳定后的激光应用于积分球冷原子钟的钟跃迁探测,对原子钟稳定度的影响小于1×10~(-13)τ~(-1/2),积分球原子钟的频率稳定度优于5×10~(-13)τ~(-1/2)(τ为取样时间)。 |
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其他语种文摘
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A laser power stabilization system for theμW probe laser is developed.Power stabilization is realized by automatically adjusting diffraction efficiency of the acousto-optic modulator.The relative intensity noise of the probe laser is effectively suppressed to the shot noise limit,and the long-term stability is better than 2×10~(-5)(1000s). The loop function equation of the power stabilization system is deduced,and the suppression effect of the loop on the relative intensity noise is analyzed.The stabilized laser is applied to detecting the clock transition of the integrating sphere cold atom clock,and its contribution to the frequency stability is less than 1×10~(-13)τ~(-1/2)(τis the samping time).The frequency stability of the clock is improved to better than 5×10~(-13)τ~(-1/2). |
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来源
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光学学报
,2016,36(8):0814004-1-0814004-5 【核心库】
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DOI
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10.3788/AOS201636.0814004
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关键词
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激光光学
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激光稳定
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冷原子钟
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激光冷却
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地址
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中国科学院上海光学精密机械研究所, 中国科学院量子光学重点实验室, 上海, 201800
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-2239 |
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学科
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物理学 |
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基金
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国家863计划
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文献收藏号
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CSCD:5777810
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参考文献 共
10
共1页
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