CAJ | 학술논문

为了获取目标的偏振信息,设计弹光调制(Photoelastic Modulator,PEM)互差频调制的新型偏振测量方法.该方法将三个 PEM 分别工作于数值略有差异的三个不同的频率上,对偏振光进行差频调制,产生载有偏振信息的低频分量,最后通过锁相放大即可同时实现四个斯托克斯偏振参数测量,斯托克斯参量可全面描述光束的偏振态.该方法不仅保留了原有弹光调制器偏振测量的优点,并且克服了现有方法无法用阵列探测器有效采集及调制频率高等缺点,同时给出利用MATLAB模拟仿真实现Stokes参量测量的过程.通过理论分析及仿真结果证明了该方法的可行性.
위료획취목표적편진신식,설계탄광조제(Photoelastic Modulator,PEM)호차빈조제적신형편진측량방법.해방법장삼개 PEM 분별공작우수치략유차이적삼개불동적빈솔상,대편진광진행차빈조제,산생재유편진신식적저빈분량,최후통과쇄상방대즉가동시실현사개사탁극사편진삼수측량,사탁극사삼량가전면묘술광속적편진태.해방법불부보류료원유탄광조제기편진측량적우점,병차극복료현유방법무법용진렬탐측기유효채집급조제빈솔고등결점,동시급출이용MATLAB모의방진실현Stokes삼량측량적과정.통과이론분석급방진결과증명료해방법적가행성.
@@@@In order to get access to the target polarization information, a new polarization measurement method of a modulation mutual difference frequency modulation is designed. In this method, The three Photoelastic Modulator (PEM) respectively work in numerical slightly in three difference frequency, polarized light is modulated to the difference frequency,and polarization information is contained in the low-frequency component. Then, through the lock-in amplifier, the four stokes polarization parameters measurement can be achieved, and Stokes parameter can describe the polarization of the light beam state. This method not only retains the original advantages of elastic-optic modulator for polarization measurements, but also overcomes the defects of the existing method which cannot use array detector effective acquisition and frequency modulation high. Moreover, the method proposed by MATLAB simulation realizes Stokes parameter measurement process. Theoretical analysis and simulation results proved the feasibility of this method.