Apparatus and methods for alkali vapor cells

摘要

Apparatus and methods for alkali vapor cells are provided. In one embodiment, a vapor cell (200) for a Chip-Scale Atomic Clocks (CSAC) comprises a silicon wafer (205) having defined within a first chamber (210), a second chamber (220), and a pathway (215) connecting the first chamber to the second chamber; a first glass wafer anodically-bonded to a first surface of the silicon wafer; a second glass wafer anodically-bonded to an opposing second surface of the silicon wafer, wherein the first chamber defines an optical path through the vapor cell; and an alkali metal material deposited into the second chamber. The pathway connecting the first chamber to the second chamber is configured with a geometry that is at least partially inhibitive to alkali metal vapor flow.