Widely tunable 2μm optical vortex from a Tm:YAP laser  

作　　者：周晶晶 郑昌盛 陈彬 张宁 高庆港 袁航琪 贾代文 王占新 刘善德 张玉萍 张会云 赵永光 Jingjing Zhou;Changsheng Zheng;Bin Chen;Ning Zhang;Qinggang Gao;Hangqi Yuan;Daiwen Jia;Zhanxin Wang;Shande Liu;Yuping Zhang;Huiyun Zhang;Yongguang Zhao(Jiangsu Key Laboratory of Advanced Laser Materials and Devices,Jiangsu Normal University,Xuzhou 221116,China;College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry,Jiangsu Normal University,Xuzhou 221116,China)

机构地区：[1]Jiangsu Key Laboratory of Advanced Laser Materials and Devices,Jiangsu Normal University,Xuzhou 221116,China [2]College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao 266590,China [3]Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry,Jiangsu Normal University,Xuzhou 221116,China

出　　处：《Chinese Optics Letters》2023年第2期55-59,共5页中国光学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52032009 and 62075090);Natural Science Foundation of Jiangsu Province(Nos.SBK2019030177 and SBX2021020083);Postgraduates Innovation Program of Jiangsu Province(No.KYCX21_2619)。

摘　　要：In this paper,we report on a wide wavelength tuning optical vortex carrying orbital angular momentum(OAM)of±?,from a thulium-doped yttrium aluminum perovskite(YAP)laser employing a birefringent filter.The OAM is experimentally found to be well maintained during the whole wavelength tuning process.The Laguerre-Gaussian(LG_(0,+1))mode with a tuning range of 58 nm from 1934.8 to 1993.0 nm and LG0,-1mode with a range of 76 nm from 1920.4 to 1996.6 nm,are,respectively,obtained.This is,to the best of our knowledge,the first experimental implementation of wavelength tuning for a scalar vortex laser in the 2μm spectral range,as well as the broadest tuning range ever reported from the vortex laser cavity.Such a vortex laser with robust structure and straightforward wavelength tuning capability will be an ideal light source for potential applications in the field of optical communication with one additional degree of freedom.

关 键 词：wavelength tunable laser 2μm laser orbital angular momentum 

分 类 号：TN248[电子电信—物理电子学]