大面积高功率940nm光子晶体面发射激光器
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关键词：光子晶体面发射半导体激光器；高功率；非对称锥形中图分类号：TN248.4 文献标识码：ADOI：10.37188/CJL.20240264 CSTR：32170.14.CJL.20240264
Large-area High Power Photonic CrystalLaser
TANG Yingxiang'，WANG Chao*，XIAO Yao²， ZHANG Zhicheng^，LUO Chen²， ZHONG Chongxi’， ZHANG Yan²，ZHAO Wu4，LI Shunfeng4，WANG Wenxin³，WANG Jun （1.Collegeof Electronic Information，Huaiyin Institute of Technology，Huaian 223oo3，China; 2.CollegelofElectronicInformation，Sichuan University，Chengdu 61oo41，China; 3.FrontierInterdisciplinaryColege，National UniversityofDefenseTechnology，Changsha41Ooo3，China; 4.SuzhouEverBrightPhotonicsCoLtd，Suzhou215163，China） *CorrespondingAuthors，E-mail：chaowang@hyit.edu.cn；wjdz@scu.edu.cn
Abstract：Photonic crystal surface emiting laser（PCSEL）canachievelarge-area coherent oscilation by utilizing band-edge resonance effects，making it a new type of semiconductor laser capableof high-brightnesssingle-mode emission，including highlycollimated beams，power scaling with area，andlow divergence angles，which gives PCSEL great application prospects inthe fields such as lidar and 3D sensing.This paper designsa square single-crystal laticeasymmetricconicalairholestructureforthePCSEL.Byincreasing thedutycycleofthephotoniccrystal，the thresholddiferencebetweenthefundamentalmodeandhigher-order modes isenhanced，enabling high-powersinglemode laseroutput overalarge mode area.Experimental results show that the developed 940 nm PCSEL achieves an output power of 5.1 Wunder 1 0 μ s wide pulse pumping，with a slope efficiency of O.43 W/A，and its far-field light spot exhibits a single-lobe distribution with a far-field divergence angle，with a linearly polarized characteristic and an 80 % polarization．Furthermore，under 5 ns narrow pulse conditions，the output power reaches as high as 35W.The development of this device can provide a good light source for laser radar systems.
KeyWords：photonic crystalsurface emitting semiconductorlaser（PCSEL）；high power；asymmetric cone shape
1引言
光子晶体面发射激光器（PCSEL）作为一种新型的半导体激光器，与现有的边发射激光器和垂直腔面发射激光器相比，表现出优越的性能。（剩余11891字）