Open AccessCs Faraday optical filter with a single transmission peak resonant with the atomic transition at 455 nm
Author(s) -
Yanfei Wang,
Xiaogang Zhang,
Dongying Wang,
Zhiming Tao,
Weihua Zhuang,
Jingbiao Chen
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.025817
Subject(s) - materials science , optics , optical filter , absorption (acoustics) , faraday cage , spectral line , transmission (telecommunications) , magnetic field , filter (signal processing) , bandwidth (computing) , atomic physics , absorption spectroscopy , faraday effect , optoelectronics , physics , telecommunications , quantum mechanics , astronomy , computer science , computer vision
We demonstrate a Cs FADOF (Faraday anomalous dispersion optical filter) with a single transmission peak resonant with the 6S(1/2), F = 4 → 7P(3/2), F' = 3, 4, 5 transition at 455 nm. The filter achieves a single peak transmission of 86%. With the technique of saturated absorption spectra, we obtain the bandwidth of the single peak, which is 1.5 GHz. While most of other FADOFs operate at frequencies far from absorption, the filter we have realized can provide light exactly resonant with atomic transitions with a high transmission. We also find that, at a particular temperature, we can achieve a single transmission peak rather than many peaks far from absorption by changing the strength of magnetic field. This technique can also be applied to other alkali atoms.