Chip-scale atomic clock with two thermal zones
US8067991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2010 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Sep 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A chip-scale atomic clock comprises a physics package and a laser die located in a first thermal zone of the physics package. A quarter wave plate is mounted in the physics package and is in optical communication with the laser die. A vapor cell is mounted in the physics package and is in optical communication with the quarter wave plate. The vapor cell is located in a second thermal zone that is independent from the first thermal zone. An optical detector is mounted in the physics package and is in optical communication with the vapor cell. The first thermal zone provides a first operation temperature at a first stability point associated with the laser die, and the second thermal zone provides a second operation temperature at a second stability point associated with the vapor cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.