All Abstracts | Poster Abstracts | Talk Abstracts | Tutorial Abstracts

Developments in chip scale atomic magnetometers

Clark Griffith, National Institute of Standards and Technology, Boulder

(Session : Thursday from )

Abstract. Techniques first developed for MEMS based atomic clocks have been used to create high performance magnetic field sensors. The sensors are based on microfabricated alkali vapor cells integrated with micro-optics and a VCSEL light source. We have demonstrated magnetic field sensitivities better than 100 fT/Hz^1/2 with these millimeter scale sensors. Adding flux concentrators further pushes the sensitivity to 10 fT/Hz^1/2, potentially providing a low power, noncryogenic alternative to SQUIDs.