https://www.nist.gov/patents/chip-scale-atomic-beam-system
Chip-Scale Atomic Beam System | NIST
Current atomic beam systems (such as Cs beam tubes for atomic clock) exist either in lab-scale vacuum systems or in custom vacuum tubes
chip scale atomicbeam system
https://www.mwrf.com/technologies/embedded/digital-semiconductors/video/55322096/microwaves-rf-microchip-technologys-chip-scale-atomic-clocks-serve-low-power-and-remote-duties
Microchip Technology's Chip-Scale Atomic Clocks Serve Low-Power and Remote Duties | Microwaves...
In a video demonstration, Microchip Technology’s chip-scale atomic clocks reveal their low phase noise and application versatility.
chip scale atomicmicrochiplow