Open AccessAnalysis of excited-state Faraday anomalous dispersion optical filter at 1529 nm
Author(s) -
Junyu Xiong,
Longfei Yin,
Bin Luo,
Hong Guo
Publication year - 2016
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.24.014925
Subject(s) - zeeman effect , rubidium , hyperfine structure , excited state , population , atomic physics , optics , dispersion (optics) , optical pumping , materials science , faraday rotator , relaxation (psychology) , faraday effect , physics , spectral line , magnetic field , laser , quantum mechanics , psychology , social psychology , demography , potassium , sociology , metallurgy
In this work, a detailed theoretical analysis of 1529 nm ES-FADOF (excited state Faraday anomalous dispersion optical filter) based on rubidium atoms pumped by 780 nm laser is introduced, where Zeeman splitting, Doppler broadening, and relaxation processes are considered. Experimental results are carefully compared with the derivation. The results prove that the optimal pumping frequency is affected by the working magnetic field. The population distribution among all hyperfine Zeeman sublevels under the optimal pumping frequency has also been obtained, which shows that 85 Rb atoms are the main contribution to the population. The peak transmittance above 90% is obtained, which is in accordance with the experiment. The calculation also shows that the asymmetric spectra observed in the experiment are caused by the unbalanced population distribution among Zeeman sublevels. This theoretical model can be used for all kinds of calculations for FADOF.