Research on Bonding Method of High Borosilicate Glass Vapor Cell

In this paper, a five-sided bonding device for a small alkali vapor cell is proposed, using polyetheretherketone (PEEK) material, which is acid and alkali resistant to prevent the corrosion of alloy materials used in traditional tooling. It avoids the problem of brittle and can easily get the slag removal of materials. Its long-term operating temperature reaches as high as 260 °C, which can withstand the annealing process in the chemical bonding process. A detachable upper, middle and lower separable structure is designed, which is convenient for the placement and removal of vapor cell parts, and easy to disassemble and simple in structure. The pulling force and transmittance tests were carried out for the successfully bonded samples, and the average values reached 1 MPa and 85.82%, respectively. This paper provides a practical and effective method for the preparation of small vapor cells for quantum precision measurement based on the interaction of light and magnetic fields.