Frequency signal generation device and frequency signal generation system
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United States of America Patent
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Oct 20, 2020
Grant Date -
Feb 28, 2019
app pub date -
Aug 30, 2018
filing date -
Aug 31, 2017
priority date (Note) -
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Abstract
A frequency signal generation device includes a substrate, a light source that is disposed on a surface of the substrate, and an atom cell that is disposed on the surface of the substrate. The atom cell contains gaseous alkali metal atoms and includes a first portion through which light emitted from the light source passes, a second portion housing a liquid alkali metal atom, and a third portion which connects the first portion to the second portion. A marker is provided that indicates a direction in which the liquid alkali metal atoms move to the third portion by gravity when the surface is vertically oriented.
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