回音壁模式花生腔制备及其定向发射特性
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中图分类号：TN243 文献标识码：ADOI：10.37188/CJL.20250042 CSTR：32170.14.CJL.20250042
Preparation of Whispering Gallery Mode Peanut-shaped Cavity and ItsDirectional Emission Characteristics
HUANG Xiaoxiao 1 ，LI Zhixiu²，SHI Linlin’，CHANG Pengfa"，ZHU Yizhi"，WANG Anbang ⋅1，3 （1.KeyLaboratoryofAdancedTranducersndIntelligentConrolSystemMinistryofEducationCollegeofysicsand OptoelectronicEngineering，TaiyuanUniversityofTechnology，TaiyuanO3oo24，China; 2.DepartmentofPhysicsandElectronic Engineering，JinzhongUniversity，JinzhongO3O619，China; 3.KeyLaboratoryofPhotonicTechnologyforIntegratedSensingandCommunication，MinistryofEducation， GuangdongUniversityofTechnology，Guangzhou51ooo6，China） *CorrespondingAuthors，E-mail：changpengfa@tyut.edu.cn；zmxzzhu@163.com
Abstract：The deformed whispering gallery mode（WGM） microcavitycombines the advantages of high quality factorand rich internal mode paths，demonstrating significant research valueinchaoticdynamics，sensingdetection， anddirectional emission.This paper presents a hybrid fabrication method combining traditional hydrogen-oxygen flameheating andcarbon dioxide laser heating.Initialy，two optical fibers were fused and stretched together using hydrogen-oxygen flame heating. Subsequently，secondary fusion stretching was performed through CO 2 laser heating to fabricatea peanut-shaped WGM microcavityarray.Experimentally，we investigated theeffects of stretching distance during flame heating and the spacing between two CO 2 laser heating positions on the dimensions and morphologyof the peanut-shaped cavities.Using atapered fiber coupling，we explored coupling intensities at different angles and confirmed their directional emision characteristics.Furthermore，experiments were conducted using fibers of diferent diametersand hollow glass tubes in combination processing to fabricate peanut-shapedcavities with two lobes of diffrent diameters and singlehollow lobes inanasymmetricconfiguration.Theemisioncharacteristicsof these cavities were simulatedand studied，confirming theuniversalityof thisapproach.This work proposes a simple method for rapid batch fabrication of WGMpeanut-shaped cavities，laying a foundation forresearch and applications of deformed WGM microcavities.
Key Words：whispering gallery mode；peanut-shaped cavity；directional emission characteristics；sensing
1引言
回音壁模式（Whispering gallery mode，WGM）微腔由于具有高品质因数（Quality，Q）小模式体积的优势，在基础物理效应研究[1-2]、低阈值激光与非线性效应激发[3-]、传感探测[8-1]等领域具有十分重要的地位。（剩余13260字）