CAJ | 학술논문

从双包层光纤激光器的速率方程和光传输方程出发，数值模拟得到泵浦功率20 W时最佳增益光纤长度。在此基础上，采用线型直腔结构，通过透镜耦合的方式，用808 nm 半导体激光器对掺Nd3+熊猫型保偏双包层光纤进行端面泵浦，获得1060 nm连续偏振的基频光输出，其线宽小于5 nm ，光-光转换效率达到50%；之后，采用腔内插入KTP晶体的方式对基频光进行倍频获得530 nm的绿光输出，其线宽小于3 nm ，倍频效率达到20%。在20 W的入纤功率泵浦下，得到2 W的530 nm连续绿光输出。
종쌍포층광섬격광기적속솔방정화광전수방정출발，수치모의득도빙포공솔20 W시최가증익광섬장도。재차기출상，채용선형직강결구，통과투경우합적방식，용808 nm 반도체격광기대참Nd3+웅묘형보편쌍포층광섬진행단면빙포，획득1060 nm련속편진적기빈광수출，기선관소우5 nm ，광-광전환효솔체도50%；지후，채용강내삽입KTP정체적방식대기빈광진행배빈획득530 nm적록광수출，기선관소우3 nm ，배빈효솔체도20%。재20 W적입섬공솔빙포하，득도2 W적530 nm련속록광수출。
Departure from the double-clad fiber laser rate equations and optical transmission equation, numerical simulation has been the best gain fiber length when the pump power of 20 W. Experiments with linear straight cavity structure, through the lens cou-pled end-pumped neodymium-doped panda type polarization maintaining double-clad fiber, experiments has obtain the fundamental frequency of cw1060 nm polarization maintaining light output, the line is less than 3 nm, light- light conversion efficiency reached 50%. Then, put a KTP crystal into the cavity to achieve frequency doubling , obtain cw 530 nm polarization maintaining green laser, its line width is less than 2 nm, SHG efficiency reached 20%. The whole system-optical conversion efficiency is 10%.The power of 530 nm green light can reach 2 W, when launched power is 20W.