Miniature atomic gas chamber, glass bulb shell and preparation method of glass bulb shell

The invention discloses a preparation method of a glass bulb shell for a miniature atomic gas chamber. The preparation method comprises the following steps: grinding the end face of a bonding part of glass sheets which can be spliced into a whole sealing cavity until the surface roughness is less than 0.05 mu m; and after impurities are removed, the glass sheets are bonded together by molecular force. The invention further discloses a miniature atomic gas chamber which comprises a sealing cavity, and the sealing cavity is a glass bulb shell. The preparation method comprises the following steps: connecting the glass bulb shell with the rubidium-filled exhaust table by using the exhaust pipe; and after vacuum degassing, high-temperature distilled rubidium steam and buffer gas are filled into the glass bulb shell, finally, the exhaust pipe is pulled out, and the glass bulb shell is automatically closed up. According to the invention, the miniature atomic gas chamber bulb shell is manufactured through a glass lig