CAJ | 학술논문

为了形成纯净的环形抽运光，以得到端面抽运固体激光器输出拉盖尔－高斯光束，采用轴棱锥系统整形方法（即将激光二极管输出的实心抽运光经过准直系统后，耦合进轴棱锥与聚焦镜组成整形系统，形成环形尺寸可变的区域空心光束）进行了理论分析和实验验证。基于几何光学的方法，对整形装置形成环形抽运光进行了理论分析及基于ZE－MAX软件的数值模拟，最后实验验证了此方法的可行性；并在研究过程中，对一种环形抽运光中间暗斑区域不变的现象进行了研究。结果表明，在采用未镀膜的轴棱锥的情况下，该系统形成环形抽运光的效率达到64．5％。
위료형성순정적배형추운광，이득도단면추운고체격광기수출랍개이－고사광속，채용축릉추계통정형방법（즉장격광이겁관수출적실심추운광경과준직계통후，우합진축릉추여취초경조성정형계통，형성배형척촌가변적구역공심광속）진행료이론분석화실험험증。기우궤하광학적방법，대정형장치형성배형추운광진행료이론분석급기우ZE－MAX연건적수치모의，최후실험험증료차방법적가행성；병재연구과정중，대일충배형추운광중간암반구역불변적현상진행료연구。결과표명，재채용미도막적축릉추적정황하，해계통형성배형추운광적효솔체도64．5％。
In order to get pure annular end-pumping beam to generate Laguerre-Gaussian beams from solid-state lasers, a method with axicon shaping system was put forward .At first, the solid pump light from LD source was collimated by the lens and was coupled into a axicon and a focal lens .And then , the shaping system was obtained and hollow beam with variable size was formed.Based on geometrical optics , theoretical analysis and numerical simulation were made with the aid of the software ZEMAX .The phenomenon of the invariant dark region of annular pump light was also investigated .The results show that power conversion efficiency could reach up to 64.5%by using the system with uncoated axicon .