New scheme of the microwave signal formation for quantum frequency standard on the atoms of caesium-133

18th International Conference PhysicA.SPb

Petrov, A.A.^1 ; Davydov, V.V.^1

Peter the Great Saint-Petersburg Polytechnic University, Saint-Petersburg, Russia^1

关键词: Long term frequency stability;    Magnetic field controls;    Microwave excitations;    Microwave signals;    Spectral characteristics;    Step frequency;    Time frequency;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012065/pdf
DOI  :  10.1088/1742-6596/769/1/012065

来源: IOP

【 摘 要 】

In present work several directions of quantum frequency standard modernization are considered. A new implementation of a frequency synthesizer and a magnetic field control unit are presented. Experimental study of a frequency synthesizer showed improvement parameters of a microwave-excitation signal, such as step frequency tuning, time frequency tuning, range of generating frequencies and spectral characteristics. Magnetic field control unit eliminates one of the most important perturbing factors affecting the long-term frequency stability. Daily frequency stability of quantum frequency standard improved on 15%.