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 87Rb vapor cell show excellent agreement for fields of 0.6 T. We show π/4 rotation for a linearly polarized weak probe beam in the vicinity of the D2 line and achieve an isolation of 30 dB.
Citation: Optics Letters
Pub Type: Journals
atomic vapor, MEMS vapor cell, optical isolator