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Quantum interference device, atomic oscillator, electronic apparatus, and moving object

  • US 10,396,810 B2
  • Filed: 03/22/2017
  • Issued: 08/27/2019
  • Est. Priority Date: 03/29/2016
  • Status: Active Grant
First Claim
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1. A quantum interference device comprising:

  • an atomic cell that has alkali metal atoms disposed therewithin;

    a light source that emits light for exciting the alkali metal atoms in the atomic cell;

    a light detector that detects the light transmitted through the atomic cell;

    a package that defines an internal space and houses at least the light source; and

    a reflective portion provided between an inner surface of the package and the light source, and that has reflectance to an electromagnetic wave having a wavelength of 4 μ

    m, wherein the reflectance of the reflective portion is greater than or equal to 50%,wherein the reflective portion is provided on an outer surface of the light source.

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