Hamamatsu-Photonics K.k.

You Wang

Hirofumi Kan

Minoru Niigaki

Yujin Zheng

An alkali-encapsulated cell internally having an alkali metal vapor G encapsulated is provided with first and second heaters. The alkali-encapsulated cellhas first and second end facesopposed to each other, and a side faceconnecting the two end faces. Each of the first and second heatershas a covering portionB,B and an extending portionC,C. Some portions of the alkali-encapsulated cellare inserted in the covering portionsB,B. On the other hand, the extending portionsC,C extend in directions away from the alkali-encapsulated cell. The first and second heatersare separated from each other with a distance dbetween them in an opposing direction of the first and second end faces

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Hamamatsu, Japan

You Wang