CAJ | 학술논문

提出了基于偏振分束法的法拉第镜偏振旋转角的测量方法.利用非偏振分束器改变法拉第镜出射光的方向,偏振分束器将该出射光分为p光和s光,分别测量其光强,应用后续"差除和"信号处理方案消除光源波动的影响,推导出法拉第镜偏振旋转角的理论表达式.分析了起偏器的消光比非0及起偏角误差对输出结果的影响,分别是0.057 29°和-0.100 0°.实验验证了该方法的可行性,重复测量结果为89.68°,均方值为0.014 93.
제출료기우편진분속법적법랍제경편진선전각적측량방법.이용비편진분속기개변법랍제경출사광적방향,편진분속기장해출사광분위p광화s광,분별측량기광강,응용후속"차제화"신호처리방안소제광원파동적영향,추도출법랍제경편진선전각적이론표체식.분석료기편기적소광비비0급기편각오차대수출결과적영향,분별시0.057 29°화-0.100 0°.실험험증료해방법적가행성,중복측량결과위89.68°,균방치위0.014 93.
The measurement of polarization rotary angle for faraday mirror based on polarizationbeam-splitter was proposed. The orientation of the light from the faraday mirror was changed through a non-polarized beam splitter (NPBS). With a polarized beam splitter (PBS), the light reflected from NPBS was split into S light and P light. Their intensities were measured, and the theoretical expression of rotary angle was deduced after the impact of optical fluctuation is eliminated by signal processing. The influence of non-zero extinction ratio and polarized-angle error on output results was analyzed. Finally the intensities were repeatedly measured, and the average rotary angle was 89.68°, the mean square deviation of all the experimental data was 0.014 93.