We report significant enhancement of the nonlinear Faraday rotation in optically thick Rb vapor. Polarization rotation angles as large as 10 rad were observed for what is believed to be the first time for sub-Gauss magnetic fields. The use of this effect for high-precision magnetometry is also discussed.
© 2001 Optical Society of America
I. Novikova, A. B. Matsko, and G. R. Welch, "Large polarization rotation via atomic coherence," Opt. Lett. 26, 1016-1018 (2001)