  The three axis magnetic field measurement based on the interaction of a
single elliptically polarized light beam with an atomic system is described.
The magnetic field direction dependent atomic responses are extracted by the
polarimetric detection in combination with laser frequency modulation and
magnetic field modulation techniques. The magnetometer offers additional
critical requirements like compact size and large dynamic range for space
application. Further, the three axis magnetic field is measured using only
reflected signal from the polarimeter, thus can be easily expanded to make
spatial array of detectors or / and high sensitivity field gradient measurement
as required for biomedical application.
