Optical module for atomic oscillator and atomic oscillator

A technology of atomic oscillators and optical modules, which can be applied to instruments using atomic clocks, electrical components, automatic power control, etc., and can solve problems such as reduced stability of atomic oscillator frequencies

Inactive Publication Date: 2012-09-19
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When this fundamental wave is irradiated to an alkali metal atom, the wavelength (frequency) of the light absorbed by the alkali metal atom changes (AC Stark Effect, AC Stark Effect), which may degrade 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

[0026] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0027] First, an optical module and an atomic oscillator according to the present embodiment will be described with reference to the drawings. The atomic oscillator according to this embodiment includes the optical module according to this embodiment. figure 1 It is a functional block diagram of the atomic oscillator 1 according to this embodiment. The atomic oscillator 1 is an oscillator that utilizes the quantum interference effect.

[0028] The atomic oscillator 1 includes an optical module 2 and a control unit 50 .

[0029] The optical module 2 includes a light source 10 , a wavelength selection unit 20 , a gas cell 30 and a light detection unit 40 .

[0030] The light source 10 generates first light L1 including a fundamental wave F having a predetermined center wavelength (center frequency), and first sidebands W1 and second sidebands W2 having mutual...

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Abstract

The invention relates to an optical module for an atomic oscillator and an atomic oscillator. The 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 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, and the wavelength selection section includes a fiber Bragg grating, and a temperature control section adapted to control temperature of the fiber Bragg grating.

Description

technical field [0001] The present 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 miniaturization and low power consumption of devices have been expected. An atomic oscillator using CPT is an oscillator that utilizes the phenomenon that, when two resonant lights having different wavelengths (frequency) are simultaneously irradiated to an alkali metal atom, the absorption of the two resonant lights stops (EIT Phenomenon: Electromagnetically Induced Transparency, electromagnetically induced transparency). For example, Patent Document 1 describes an atomic oscillator configured to include an optical module including a light source emitting coherent light and a gas cell in which alkali metal atoms are enclosed as an atomic oscillator using CPT. and a light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/26
CPCH03L7/26G04F5/14
Inventor 西田哲朗
Owner SEIKO EPSON CORP
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