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superich

新虫 (初入文坛)

[求助] 求翻译

This integration is necessary because of the low light level extracted from the ring laser (10 nW) and the feedback jitter of the actively stabilized reference laser. A feedback system adjusts the pressure inside the vessel such that a constant cavity perimeter is maintained. Apart from isolating the cavity fromatmospheric pressure variations, we also compensate for small thermal expansions from the seasonal temperature cycle of the entire sensor structure. In addition to this, we also stabilize the relative power of the two counterpropagating intracavity beams via a feedback mechanism. This minimizes any possibility for nonreciprocal effects within the gain medium to introduce a systematic variation to the measured Sagnac frequency.
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alvarohao

铁杆木虫 (著名写手)

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superich(金币+15, 翻译EPI+1): 2011-11-16 11:44:05
由于环形激光器(10nW)发出光较弱,灵敏而稳定的基准激光又存在反馈振动,所以必需要有此集成(积分器)。反馈系统可以调节管腔内的压力以使管腔周长保持恒定。除了为隔离管腔外部压力的变化,我们还要补偿整个传感器结构在季节性温度循环变化下的微小温度膨胀。除此之外,我们还要通过一个反馈机制来稳定两个按相反方向传输的腔内光柱的相对功率。这样就最大程度降低了在增益介质中非互易效应发生的可能性,以便为所测Sagnac频率引进系统性变化。
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2楼2011-11-16 11:05:06
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