Ultra-narrow bandwidth atomic filter based on optical-pumping-induced dichroism realized by selectively saturated absorption |
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| Authors: | Shuangqiang Liu Yundong Zhang Hao Wu Ping Yuan |
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| Institution: | 1. Institut de Physique Nucleaire de Lyon, Villeurbanne F-69622, France;2. Universite de Lyon, Lyon F-69003, France;3. e2v, Saint Egrève F-38521, France;4. French National Centre for Scientific Research (CNRS), France;1. School of Microelectronic Engineering, University Malaysia Perlis (UniMAP), Pauh Putra, 02600 Arau, Perlis, Malaysia;2. Semiconductor Photonics & Integrated Lightwave Systems (SPILS), School of Microelectronic Engineering, University Malaysia Perlis, Pauh Putra, 02600 Arau, Perlis, Malaysia;3. Department of Electrical and Electronic Engineering, Faculty of Engineering, National Defence University of Malaysia (UPNM), Kem Sungai Besi, 57000 Kuala Lumpur, Malaysia;1. Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China;2. State Grid BeiJing Electric Power Company, BeiJing 100031, China;1. Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, 5166614761, Iran;2. School of Engineering-Emerging Technologies, University of Tabriz, Tabriz 5166614761, Iran |
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| Abstract: | We report an ultra-narrow bandwidth atomic filter based on optical pumping induced dichroism. Induced-dichroism-excited atomic line filters in previous research used a pump to populate atoms on special Zeeman sub-levels, so only one sigma component of the probe undergoes absorption while the other one can pass through the medium freely because of dipole forbidden. Unlike in previous research, we proposed a novel method to get circular dichroism realized by “selectively” saturated absorption in rubidium. In the experiment, we observed three transmission peaks: the principle of the first two is the same as the previous research, while the third one is realized by selectively saturated absorption, which has a peak transmission of 14.9% with 61 MHz bandwidth. |
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