Local oscillator limited frequency stability for passive atomic frequency standards using square wave frequency modulation

2000 ◽  
Vol 47 (6) ◽  
pp. 1593-1600 ◽  
Author(s):  
C.A. Greenhall ◽  
G.J. Dick
Keyword(s):  
Frequency Modulation ◽  
Local Oscillator ◽  
Frequency Stability ◽  
Wave Frequency ◽  
Square Wave ◽  
Frequency Standards ◽  
Limited Frequency ◽  
Atomic Frequency

An Enhanced Physics Package Used in Rubidium Atomic Frequency Standards

2014 ◽  
Vol 687-691 ◽  
pp. 3179-3182 ◽  
Author(s):  
Hao Feng ◽  
Jing Zhong Cui ◽  
Jian Hui Tu
Keyword(s):  
Optical Filter ◽  
Preliminary Test ◽  
Frequency Stability ◽  
Microwave Cavity ◽  
Frequency Noise ◽  
Light Shift ◽  
Resonance Signal ◽  
The Core ◽  
Frequency Standards ◽  
Atomic Frequency

Physics package is the core of rubidium atomic frequency standards (RAFS). In this paper, a physics package of RAFS with enhanced performance is reported. The physics package is designed according to the separated filter scheme, in which an optical filter and a magnetron microwave cavity are used to reduce the white frequency noise and to intensify the resonance signal. The light-shift (LS) and temperature coefficient (TC) can be conveniently adjusted in the separated filter scheme. A preliminary test shows that a frequency stability of the RAFS is less than .

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