Optical module for atomic oscillator and atomic oscillator
US8638177B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2012 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Mar 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical module for an atomic oscillator using a quantum interference effect includes a light source adapted to emit light including a fundamental wave having a predetermined wavelength, and sideband waves of the fundamental wave, a wavelength selection section receiving the light from the light source, and adapted to transmit the sideband waves, a gas cell encapsulating an alkali metal gas and irradiated with light transmitted through the wavelength selection section, and a light detection section adapted to detect an intensity of light transmitted through the gas cell, and the wavelength selection section including an optical filter section adapted to transmit light having a wavelength within a predetermined wavelength range, and an optical filter characteristic control section adapted to vary the wavelength range of light to be transmitted by the optical filter section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.