Quantum interference device, atomic oscillator, electronic apparatus, and moving object
US10348317B2 · kind B2 · utility
1Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A quantum interference device (atomic oscillator) includes a light source unit as a coherent light source, a unit that superimposes microwave on the light source unit to generate a side band, an atom cell in which an alkali metal gas is enclosed, and a light receiving unit that detects light transmitted through the atom cell, wherein the light source unit is a surface-emitting laser that outputs a zero-order mode light and a plurality of higher-order mode lights, and a mode filter that cuts the higher-order mode lights is placed between the light source unit and the atom cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.