Saturated absorption double resonance system and apparatus
US5136261A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1990 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Dec 11, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new detection method and system uses saturated optical absorption, double resonance of a narrow velocity class of atoms, such as cesium, to provide substantially improved frequency standards and physics packages. Such systems and standards are provided with a closed, at least partially transparent, cell of atoms of an alkali element such as cesium, without buffer gases, that are excited by laser light travelling through the atoms in counter-propagating directions at a frequency selected to correspond to the average of two optical frequencies selected to change the narrow velocity class of atoms from a first energy level to a second energy level and from the first energy level to a third energy level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.