CAJ | 학술논문

研究了外部光反馈对980nm垂直腔面发射激光器(VCSEL)振荡特性的影响.计算了垂直腔面发射激光器及边发射半导体激光器的光反馈灵敏因子.基于复合腔理论,分析了外部光反馈对垂直腔面发射激光器的阈值电流及微分量子效率等振荡特性参数的影响.实验结果表明,当反馈率为10%时,垂直腔面发射激光器的阈值电流由0.63A下降至0.59A,同时斜率效率和输出功率也有所下降.实验结果和理论分析符合得较好.
연구료외부광반궤대980nm수직강면발사격광기(VCSEL)진탕특성적영향.계산료수직강면발사격광기급변발사반도체격광기적광반궤령민인자.기우복합강이론,분석료외부광반궤대수직강면발사격광기적역치전류급미분양자효솔등진탕특성삼수적영향.실험결과표명,당반궤솔위10%시,수직강면발사격광기적역치전류유0.63A하강지0.59A,동시사솔효솔화수출공솔야유소하강.실험결과화이론분석부합득교호.
The effects of external optical feedback(OFB)on the oscillating characteristics of 980nm vertical-cavity surface-emitting lasers (VCSEL) were investigated. The OFB sensibility of VCSEL and edge emitting lasers (EEL) were evaluated by calculating OFB parameters. Based on the compound cavity theory, the effects of external optical feedback on the oscillating characteristic parameters of VCSEL, such as the threshold current and the differential quantum efficiency, were analyzed. The experimental results indicate that the threshold current of the VCSEL decreases from 0.63A to 0.59A when the feedback ratio is 10%. Meantime, the slope efficiency and the output power also decrease. The result of experiment is in good agreement with the calculation.