Vapor cell detection system
US12248041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Oct 5, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6482
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One example includes a vapor cell. The cell includes a transparent enclosure and alkali metal atoms enclosed within the transparent enclosure. The alkali metal atoms can be configured to be stimulated from a first energy state to a second energy state in response to an optical beam provided through the vapor cell and to emit fluorescent light in response to energy of the alkali metal atoms decaying from the second energy state to the first energy state. The cell further includes a reflective coating that is provided on an exterior surface of the transparent enclosure to surround the vapor cell to provide a reflective interior surface with respect to the transparent enclosure of the vapor cell to reflect the fluorescent light. The reflective coating can include a detection window configured to facilitate escape of the fluorescent light from the vapor cell for optical detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.