滤光对被动式铷钟稳定性影响的研究
STUDY ON THE INFLUENCE OF OPTICAL FILTER IN FREQUENCY STABILITY OF RUBIDIUM ATOMIC FREQUENCY STANDARD
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摘要: 为了抑制被动式铷钟除抽运光外杂散光的干扰,降低光谱灯的光噪声对信噪比的影响,设计制作了带宽30 nm的带通滤光片。测试结果显示,铷钟的短期频率稳定度有了明显的提高。分析了千秒以上稳定度变差的原因并给出了进一步改进的措施。Abstract: A 30 nm bandwidth of band pass filiter was designed and fabricated for restraining the scattering light and increasing the ratio Signal to Noise（S/N）.The test results show that the short term frequency stability has been evidently improved.The dropping reason of long term frequency stability was analysed and several improved approach was gived.
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