Frequency-stabilized laser source adapted for use as a frequency standard, in particular in the field of telecommunications
US7233608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2002 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Jun 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1618
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A frequency-stabilized laser source that is adapted for use as a frequency standard. The frequency of the laser source is locked and the laser beam delivered by the laser source on a transition of an absorber chemical element. The technique combines both operation with saturated absorption and synchronous detection, based on modulating said transition being saturated by the beam passing through the absorber chemical element. This produces a single frequency laser beam whose output frequency is stationary. The frequency is not continuously modulated and is more precise than that which would be obtained operating with single-pass absorption only. The laser source is thus adapted for making a frequency standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.