随机激光器的动量空间辐射特性研究进展  

Research progress on radiation characteristics of random lasers at momentum space

作　　者：苑宏宇 刘加瑶 高亚婧 卞耀兴 王兆娜[1,2] YUAN Hongyu;LIU Jiayao;GAO Yajing;BIAN Yaoxing;WANG Zhaona(Applied Optics Beijing Area Major Laboratory,School of Physics and Astronomy,Beijing Normal University,Beijing 100875,China;Key Laboratory of Multiscale Spin Physics(Ministry of Education),Beijing Normal University,Beijing 100875,China;Beijing School,Beijing 100875,China;College of Physics and Optoelectronics Engineering,Taiyuan University of technology,Taiyuan 030024,China)

机构地区：[1]北京师范大学物理与天文学院应用光学北京地区重点实验室,北京100875 [2]北京师范大学多尺度自旋物理教育部重点实验室,北京100875 [3]北京学校,北京100875 [4]太原理工大学,物理与光电工程学院,山西太原030024

出　　处：《物理实验》2025年第4期1-14,共14页Physics Experimentation

基　　金：国家自然科学基金重大研究计划培育项目(No.92150109)。

摘　　要：随机激光器基于多重散射实现具有空间和时间随机性的激光模式,其辐射激光兼具高时间相干性和低空间相干性,在无散斑成像、激光显示与照明等领域具有重要的应用价值.为了精细调控随机激光光场的空间频率谱,随机激光的光场调控研究被拓展到动量空间.本文从随机激光的产生机制和表征方法出发,综述了辐射特性可调随机激光器的研究现状,介绍了动量空间光场的表征技术和微腔结构对辐射光场的调控作用;重点展示了光纤波导、光子晶体微腔与随机散射耦合实现的动量空间辐射特性可调的随机激光器的工作原理、辐射特性和特色应用;最后,对动量空间随机激光的发展前景进行了展望.Random lasers possess lasing modes with spatial and temporal randomness based on multiple scattering.The corresponding random lasing has both high temporal coherence and low spatial coherence,and thus has significant application values in the fields of speckle-free imaging,laser display,and information security.To precisely regulate the spatial frequency spectrum of the random lasing light field,the research on light field regulation of random lasing has been extended to the momentum space.In this paper,the generation mechanism and characterization methods of random lasers and its research progress on adjustable radiation characteristics at real space were introduced.Then,the characterization techniques for the light field in the momentum space and the regulatory effect of the microcavity structure on the radiation light field were demonstrated.The working principle,radiation characteristics,and characteristic applications of random lasing with adjustable momentum-space radiation characteristics were presented through coupling fiber waveguide and photonic crystal microcavity with random scattering.Finally,the prospects for further developing random lasing light field in the momentum space were discussed.

关 键 词：随机激光 动量空间 光场调控 光子晶体 

分 类 号：TN248[电子电信—物理电子学]