Progresses on multipass-cavity-assisted atomic devices

Atomic instrumentation is an interdisciplinary research area. It combines the high stability property of atomic spectroscopy and the miniaturization technique from precision engineering. There have been considerable research efforts and application promise in such fields as atomic clocks, atomic magnetometers and atomic interferometers. The introduction of multipass cavities could effectively increase the interaction length between atoms and light, without changing other experimental parameters. This could improve the device sensitivity while keeping the instrument size small. In this paper, recent progress on atomic devices using multipass cavities was reviewed, and Herriott-cells-assisted atomic magnetometers were discussed at length. Using anodic bonding and 3D printing techniques, optical adjustments were removed, and the multipass cells were applied in the electron spin and nuclear spin magnetometers.