Study on resonant characteristic of microwave cavity loaded with complex structure dielectric in rubidium frequency standard

2009 ◽  
Author(s):  
Qian Huang ◽  
Binzhao Cao ◽  
Xiaoxiao Li ◽  
Yinqin Cheng ◽  
Jingzhong Cui
Keyword(s):  
Complex Structure ◽  
Frequency Standard ◽  
Microwave Cavity ◽  
Resonant Characteristic

Study on TE011 Mode’s Resonant Characteristic of Complicated Microwave Cavity with Ceramics Layer in Rubidium Frequency Standard

2012 ◽  
Vol 571 ◽  
pp. 137-142
Author(s):  
Xiao Xiao Li ◽  
Bin Zhao Cao
Keyword(s):  
Frequency Standard ◽  
Microwave Cavity ◽  
Mode Matching ◽  
Matching Method ◽  
Resonant Frequencies ◽  
Factors Influencing ◽  
Cavity Design ◽  
Main Factors ◽  
Resonant Characteristic ◽  
Good Agreement

Complicated microwave cavity loaded with ceramics is first investigated by mode matching method in rubidium frequency standard. In order to study main factors influencing resonant characteristics, resonant frequencies of TE011 mode are calculated and compared with commercial software (CST) results. The results show good agreement between theoretical computations and CST simulations. This work is of great significance for cavity design and theory perfection in atomic frequency standard.

Pumping light intensity transmitted through an inhomogeneously broadened line system: application to passive rubidium frequency standards

1985 ◽  
Vol 63 (12) ◽  
pp. 1563-1575 ◽  
Author(s):  
Pierre Tremblay ◽  
Normand Cyr ◽  
Michel Têtu
Keyword(s):  
Light Intensity ◽  
Resonance Curve ◽  
Frequency Standard ◽  
Microwave Cavity ◽  
Axial Component ◽  
Buffer Gas ◽  
Theoretical Evaluation ◽  
Line System ◽  
Component Distribution ◽  
Inhomogeneously Broadened Line

This paper presents a theoretical evaluation of the pumping light intensity transmitted through an inhomogeneously broadened line system submitted to a coherent microwave excitation. A model is developed for the case of rubidium 87 atoms interacting with a buffer gas and optically pumped by all components of the D1 and D2 lines. The light generated by an electrodeless lamp is considered incoherent and the coherent signal is produced in a microwave cavity. The spatial distribution of the light intensity transmitted through the absorption cell is shown to be related to the microwave magnetic-field axial-component distribution. Then the resonance curve obtained with a photodetector is a function of its shape and location. When applied to the case of a passive rubidium frequency standard, this model allows the calculation of the ultimate short-term frequency stability of the device.

scholarly journals Design of atomic clock cavity based on a loop-gap geometry and modified boundary conditions

2017 ◽  
Vol 9 (7) ◽  
pp. 1373-1386 ◽  
Author(s):  
Anton E. Ivanov ◽  
Christoph Affolderbach ◽  
Gaetano Mileti ◽  
Anja K. Skrivervik
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Optical Pumping ◽  
Atomic Clock ◽  
Future Generation ◽  
Frequency Standard ◽  
Microwave Cavity ◽  
Magnetic Field Homogeneity ◽  
Field Homogeneity ◽  
Precision Frequency

In this study, we investigate a concept that can be used to improve the magnetic field homogeneity in a microwave cavity applied in a novel, high-performance atomic frequency standard. We show that by modifying the boundary conditions in the case of a loop-gap geometry, a good improvement of the field homogeneity can be obtained. Such a design demonstrates high potential to improve the frequency stability; it is compact and hence suitable for a future generation of compact, high-precision frequency standards based on vapor cells and a pulsed optical pumping (POP) regime (POP atomic clocks).

Study on Resonant Properties for HE111 Mode of Complicated Microwave Cavity in Rubidium Frequency Standard under Different Parameters

2013 ◽  
Vol 373-375 ◽  
pp. 981-985
Author(s):  
Xiao Xiao Li ◽  
Shang Lin Hou ◽  
Jing Li Lei
Keyword(s):  
Resonant Frequency ◽  
Frequency Standard ◽  
Microwave Cavity ◽  
Matching Method ◽  
Complicated Structure ◽  
Resonant Frequencies ◽  
Cavity Design ◽  
Main Factors ◽  
High Credibility ◽  
Good Agreement

Microwave cavity with complicated structure and rubidium gas is studied by mode matching method. By calculating resonant frequencies of HE111mode under different parameters, main factors that influence resonant frequency is studied. In addition, the resonant frequency of HE111mode is compared with commercial software (CST) results. The computed results show good agreement with CST simulations. It can be seen that this method is of high credibility and efficiency. This paper is of great significance for cavity design and theoretical perfection.

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