Abstract

We demonstrate a Faraday anomalous dispersion optical filter (FADOF) operating on 5S1/26P3/2 transition at 420 nm with a 5 cm long cell of 96.5% enriched Rb87 and measure the transmission as a function of the magnetic field and temperature. The isotope Rb87 FADOF achieves a peak transmission of 98% with a bandwidth of 2.5 GHz when the temperature of the isotope Rb87 cell is 280°C and the magnetic field is 500 G. The corresponding equivalent noise bandwidth is 5.9 GHz. The isotope Rb87 FADOF is applied to submarine communications, is used as the laser frequency stabilization for some atomic lines, and is also used as the pump laser in four-level Rb active optical clock.

© 2014 Optical Society of America

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