STUDY ON THE INFLUENCE OF OPTICAL FILTER IN FREQUENCY STABILITY OF RUBIDIUM ATOMIC FREQUENCY STANDARD
 
                 
                
                    
                                        
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Graphical Abstract
 
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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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