涡旋光激光器研究进展(特邀)  

Research Progress of Vortex Beam Laser(Invited)

作　　者：吕铭鑫 张翼鹏 何健朗 胡小鹏[1,2] 张勇 LV Mingxin;ZHANG Yipeng;HE Jianlang;HU Xiaopeng;ZHANG Yong(National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China;College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China;School of Physics,Nanjing University,Nanjing 210093,China)

机构地区：[1]固体微结构物理国家重点实验室(南京大学),南京210093 [2]南京大学现代工程与应用科学学院,南京210093 [3]南京大学物理学院,南京210093

出　　处：《光子学报》2022年第1期97-108,共12页Acta Photonica Sinica

基　　金：National Natural Science Foundation of China(Nos.91950206,11874213);National Key Research and Development Program of China(No.2017YFA0303703);Fundamental Research Funds for the Central Universities(Nos.021314380191,021314380105)。

摘　　要：涡旋光激光器能够输出具有特定空间结构的高能量、高质量的涡旋光束。涡旋光束在光通讯、光操控、超分辨成像等领域都有潜在的应用前景。本文介绍了涡旋光束的产生原理及其应用,综述了近期涡旋光激光器的发展历程,同时也对涡旋光激光器的发展趋势进行了展望。The vortex beam laser outputs a high-energy and high-quality vortex beam,which is one typical structured light field. Vortex beam has potential applications in many important fields,such as optical communications,optical manipulation,precision measurement,quantum information,and superresolution imaging. Therefore,how to efficiently generate high quality vortex beam has attracted considerable interests of research in recent years. In this paper,we first briefly introduce the generation principle and main applications of the vortex beam. There are two main ways of generating vortex beams,i.e.,active method and passive method. Compared with active method,passive method generally suffers from low conversion efficiency and poor beam quality(especially for high order vortex beams). When a high quality vortex beam is needed,active method is a better choice. The active method generates vortex beams under laser configuration. For example,the high purity vortex beam can be generated by using the mode selection of the laser cavity. At present,the research focus on vortex beam laser is to improve the laser performance and the mode purity of the output vortex beam. In addition,the integration of vortex beam laser,which facilitates various commercial applications,is also a hot topic. Then,we review the recent progress of vortex beam lasers,including solid-state vortex laser,vortex-beam optical parametric oscillator,fiber vortex laser and on-chip integrated vortex lasers. Solid-state vortex laser is one of the most common methods to generate a vortex beam. By properly designing various types of resonators,one can generate the desired laser vortex mode while suppressing the unwanted ones. Taking Laguerre– Gaussian beams as an example,one can use the pump shaping technique to transform the pump beam from a Gaussian beam to a ring shaped intensity profile,which can effectively enhance the gain of the matched Laguerre – Gaussian cavity mode and decrease the gain of other modes. In addition,a tilted etalon can also be used in th

关 键 词：涡旋光 轨道角动量 激光器 光学参量振荡 光纤激光器 

分 类 号：O437[机械工程—光学工程]