Method of stabilizing electromagnetic field strength in an atomic system
US6025755A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/26
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Frequency stabilization of an atomic system is improved by closed loop stabilization of the power level of an atomic excitation signal. A second harmonic atomic Rabi response varies with excitation power level so that power modulation of the atomic excitation and demodulation of the second harmonic response produces a power error signal for closed loop power level control using a voltage controlled attenuator. The atomic system also includes conventional frequency stabilization closed loop control using a voltage controlled oscillator. Both power and frequency modulation of the excitation signal generate a complete atomic response from which both power and frequency error signals are generated for both power and frequency closed loop stabilization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.