CAJ | 학술논문

设计构建了垂直腔面发射激光器偏振测试系统，利用该测试系统研究了激光器不同偏振模式的阈值行为特点。激光器的输出光随着驱动电流的增大将会出现P偏振以及S偏振两种相互正交的偏振分量，并且两者具有不同的工作阈值；进一步依据测得的阈值点将激光器分为三个工作区域，通过对非偏振及偏振测试结果的比较分析得出：垂直腔面发射激光器的非偏振测量中观测到的工作阈值点体现的是P偏振分量的阈值点；激光器S偏振分量的阈值需要通过偏振测量才能明显观测到；P偏振与S偏振分量阈值电流之间的工作区域具有最好的线偏振度。本文的研究为垂直腔面发射激光器的未来研制测试工作和更好应用夯实了基础。
설계구건료수직강면발사격광기편진측시계통，이용해측시계통연구료격광기불동편진모식적역치행위특점。격광기적수출광수착구동전류적증대장회출현P편진이급S편진량충상호정교적편진분량，병차량자구유불동적공작역치；진일보의거측득적역치점장격광기분위삼개공작구역，통과대비편진급편진측시결과적비교분석득출：수직강면발사격광기적비편진측량중관측도적공작역치점체현적시P편진분량적역치점；격광기S편진분량적역치수요통과편진측량재능명현관측도；P편진여S편진분량역치전류지간적공작구역구유최호적선편진도。본문적연구위수직강면발사격광기적미래연제측시공작화경호응용항실료기출。
The polarization test system for a vertical cavity surface emitting laser(VCSEL)is designed. With this test system,the threshold behaviors of VCSEL are studied. With the increase of driven current,two orthogonal polarization states are observed and their thresholds are different. According to the thresholds,the working region of the laser is di-vided into three parts. The analysis based on the non-polarization and polarization experimental results show that the threshold of the experimental curve from the non-polarization measurements is the threshold of P-polarized light;the threshold of the S-polarized light of the laser is observed obviously with polarization measurements;In the working re-gion between the thresholds of P-polarized and S-polarized light,the degree of the linear polarization is higher than other working regions. The studies of this paper set the steady basis for further researches,test,and applications of a vertical cavity surface emitting laser.