A light, compact optical isolator using an atomic vapor in the hyperfine Paschen–Back regime is presented. Absolute transmission spectra for experiment and theory through an isotopically pure Rb87 vapor cell show excellent agreement for fields of 0.6 T. We show π/4 rotation for a linearly polarized beam in the vicinity of the D2 line and achieve an isolation of 30 dB with a transmission >95%.
© 2012 Optical Society of America
Original Manuscript: June 6, 2012
Revised Manuscript: June 29, 2012
Manuscript Accepted: July 3, 2012
Published: August 8, 2012
L. Weller, K. S. Kleinbach, M. A. Zentile, S. Knappe, I. G. Hughes, and C. S. Adams, "Optical isolator using an atomic vapor in the hyperfine Paschen–Back regime," Opt. Lett. 37, 3405-3407 (2012)