Optical module and atomic oscillator
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United States of America Patent
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Dec 1, 2015
Grant Date -
May 7, 2015
app pub date -
Oct 31, 2014
filing date -
Nov 1, 2013
priority date (Note) -
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Abstract
An optical module of an atomic oscillator includes: a surface emitting laser adapted to emit light; a depolarization element irradiated with the light emitted from the surface emitting laser, and adapted to dissolve a polarization state of the light irradiated; a polarization element irradiated with light having been transmitted through the depolarization element; a λ/4 plate irradiated with light having been transmitted through the polarization element, and having a fast axis disposed so as to rotate by 45 degrees with respect to a polarization transmission axis of the polarization element; a gas cell encapsulating an alkali metal gas, and irradiated with light having been transmitted through the λ/4 plate; and a light detection section adapted to detect intensity of light having been transmitted through the gas cell.
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