文献类型：期刊文献

英文题名：Multiwavelength Magnetic-Free Optical Isolator by Optical Pumping in Warm Atoms

作者：Hu, Yiqi[1,2];Zhang, Shicheng[1];Qi, Yihong[1];Lin, Gongwei[1];Niu, Yueping[1,3];Gong, Shangqing[1,3]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai 200237, Peoples R China

年份：2019

卷号：12

期号：5

外文期刊名：PHYSICAL REVIEW APPLIED

收录：;EI(收录号：20194707716530);WOS:【SCI-EXPANDED(收录号:WOS:000494035000001)】；

基金：This work is supported by the National Natural Science Foundation of China (Grants No. 11874146, No. 11774089, and No. 11674094) and the Shanghai Natural Science Foundation (Grants No. 18DZ2252400, No. 17ZR1442700, and No. 18ZR1410500).

语种：英文

外文关键词：Optical pumping - Signal processing - Optical communication - Optical data processing - Atoms

摘要：Realization of magnetic-free nonreciprocal transmission for two or more wavelengths simultaneously is in great demand for multiwavelength optical communication and signal processing. Here, making use of optical pumping, we propose and experimentally demonstrate a magnetic-free multiwavelength isolator based on warm V-type atoms with the assistance of the Doppler effect. Applying Rb-85 atoms, isolation ratios of 25 and 28 dB are obtained simultaneously for signal fields at 795 and 780 nm with transmissions higher than 0.85. This work provides an effective way to realize a multiwavelength optical isolator for optical information processing applications.