Optical module for atomic oscillator and atomic oscillator

A technology of atomic oscillators and optical modules, applied in instruments, pre-selected time interval generators, automatic power control, etc., can solve problems such as reduced stability of atomic oscillators

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 the fundamental wave is irradiated on the alkali metal atom, the wavelength (frequency) of the light absorbed by t

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, the optical module and atomic oscillator of this embodiment will be described with reference to the drawings. The atomic oscillator of this embodiment includes the optical module of this embodiment. figure 1 It is a functional block diagram of the atomic oscillator 1 of 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 a first light L1 that includes a fundamental wave F having a predetermined center wavelength (center frequency), and a first sideband W1 and a second sideband W2 having mutually different wavelengths.

[0031] The wavelength selec...

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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 voltage application section adapted to apply a voltage to 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, an atomic oscillator using CPT (Coherent Population Trapping), which is one of the quantum interference effects, has been proposed, and people are looking forward to miniaturization and low power consumption of the device. The atomic oscillator using CPT uses the phenomenon that when two resonance lights with different wavelengths (frequency) are simultaneously irradiated to an alkali metal atom, the absorption of the two resonance lights stops (EIT phenomenon: Electromagnetically Induced Transparency) Oscillator. For example, Patent Document 1 describes that, as an atomic oscillator using CPT, an atomic oscillator is configured to include an optical module having a light source that emits coherent light, a gas cell encapsulated with alkali metal atoms, and detection of transmitted gas. The light receiving el...

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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