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Optical module for atomic oscillator and atomic oscillator

An atomic oscillator, optical module technology, applied in the direction of instruments, pre-selected time interval generating devices, automatic power control, etc.

Inactive Publication Date: 2012-09-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these fundamental waves irradiate alkali metal atoms, the wavelength (frequency) of the light absorbed by the alkali metal atoms often changes (AC Stark effect), which reduces the stability of the frequency of the atomic oscillator

Method used

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  • Optical module for atomic oscillator and atomic oscillator
  • Optical module for atomic oscillator and atomic oscillator
  • Optical module for atomic oscillator and atomic oscillator

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Embodiment Construction

[0030] Preferred embodiments of the present invention will be described below with reference to the drawings. In addition, in each of the following figures, the size of each component may differ from the actual size in order to make each component recognizable.

[0031] figure 1 It is a block diagram showing the function of the atomic oscillator of this embodiment. First, the optical module and atomic oscillator of this embodiment will be described. The atomic oscillator 1 is an oscillator utilizing the quantum interference effect, and the atomic oscillator 1 includes an optical module 2 and a control mechanism 50 .

[0032] The optical module 2 is sequentially connected with a light source 10 , a wavelength selection mechanism 20 , a gas unit 30 and a light detection mechanism 40 . The light source 10 generates first light L1 including a fundamental wave F having a central wavelength (center frequency), and first and second sidebands W1 and W2 having mutually different wav...

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Abstract

The invention relates to an optical module for atomic oscillator and atomic oscillator. The optical module for an atomic oscillator uses a quantum interference effect. The optical module includes a light source adapted to emit light including a fundamental wave having a center 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 out of the light input, 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. The wavelength selection section includes an etalon and a temperature control section adapted to control temperature of the etalon.

Description

technical field [0001] The invention relates to an optical module for an atomic oscillator and an atomic oscillator. Background technique [0002] In recent years, atomic oscillators using CPT (Coherent Population Trapping), which is one of the quantum interference effects, have been proposed, and devices are expected to be miniaturized and consume less power. An atomic oscillator using CPT is an oscillator that utilizes a phenomenon (EIT phenomenon: Electromagnetically Induced Transparency) in which the absorption of two types of resonance light is stopped when two types of resonance light having different wavelengths (frequency) are irradiated to an alkali metal atom at the same time. For example, as an atomic oscillator using CPT, Patent Document 1 describes an atomic oscillator including an optical module having a light source emitting coherent light, a gas cell encapsulating alkali metal atoms, and detecting Unit of light intensity of the light-receiving element. [0...

Claims

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Application Information

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IPC IPC(8): H03L7/26
CPCG04F5/145H03L7/26
Inventor 西田哲朗
Owner SEIKO EPSON CORP
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