Magnetometry with millimeter-scale anti-relaxation-coated alkali-metal vapor cells

Abstract

Dynamic nonlinear magneto-optical-rotation signals with frequency- and amplitude-modulated laser light have been observed and investigated with a spherical glass cell of 3-mm diameter containing Cs metal with inner walls coated with paraffin. Intrinsic Zeeman relaxation rates of ${\hat{I}}^3/(2\ddot{I}€)\approx 20$Hz and lower have been observed. Favorable prospects of using millimeter-scale coated cells in portable magnetometers and secondary frequency references are discussed.

7 pages, 9 figures