Transverse-mode control in VCSELs by electrically tunable liquid crystal mode filters - 文章详情页

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摘要：

A　distinctive　method　is　used　to　achieve　transverse-mode　control　by　building　and　integrating　a　tunable　liquid　crystal　(LC)　mode　filter　on　top　of　traditional　vertical-cavity　surface-emitting　lasers　(VCSELs).　An　LC　cell　is　fabricated　by　injecting　a　type　of　nematic　LC　material　(E7)　in　an　annular　groove　patterned　by　SiO2.　By　electrically　tuning　the　refractive　index　of　the　LC,　a　spatially　dependent　reflectivity　profile　can　be　achieved　and　optimized,　which　directly　influences　the　threshold　modal　gain　of　each　transverse　mode　provided　by　oxide-confined　VCSELs.　The　flexible　and　accurate　control　performance　of　the　LC　mode　filter　structure　have　been　demonstrated　by　the　simulation　results　and　our　analysis.　This　design　is　a　completely　novel　method　to　realize　VCSELs　with　an　accurate　and　real-time　controllable　transverse-mode,　and　it　will　probably　play　a　significant　role　in　the　future.　©　2021　Author(s).

关键词：

Crystal filters Liquid crystals Liquid lasers Passive filters Refractive index Silica Surface emitting lasers Transceivers

作者机构：

[ 1 ] [Shao, Hongyan]Key Laboratory of Semiconductor Material Sciences, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China
[ 2 ] [Shao, Hongyan]College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 3 ] [Shao, Hongyan]Key Laboratory of Opto-electronic Technology, Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Guan, Baolu]Key Laboratory of Opto-electronic Technology, Ministry of Education, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Cui, Lijie]Key Laboratory of Semiconductor Material Sciences, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China
[ 6 ] [Cui, Lijie]College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 7 ] [Cui, Ning]Key Laboratory of Semiconductor Material Sciences, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China
[ 8 ] [Cui, Ning]College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 9 ] [Zhang, Yang]Key Laboratory of Semiconductor Material Sciences, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China
[ 10 ] [Zhang, Yang]College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China
[ 11 ] [Zeng, Yiping]Key Laboratory of Semiconductor Material Sciences, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China
[ 12 ] [Zeng, Yiping]College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing; 100049, China

通讯作者信息：

[guan, baolu]key laboratory of opto-electronic technology, ministry of education, beijing university of technology, beijing; 100124, china

电子邮件地址：

zhang_yang@semi.ac.cnemailypzeng@semi.ac.cnemailgbl@bjut.edu.cn) Zeng, Yiping(ypzeng@semi.ac.cnemailgbl@bjut.edu.cn) Guan, Baolu(gbl@bjut.edu.cn

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