CAJ | 학술논문

横向剪切干涉纯背景条纹因来源于剪切前后波面在重叠区的干涉，而受光学系统像差和附加相位的调制。根据横向剪切的成像理论，利用 Matlab 软件模拟纯背景条纹，分析离焦像差、球差等光学系统像差和附加相位差的影响。研究结果表明：条纹的密集度和形状受像差的影响很大，随附加相位差呈周期性分布。纯背景条纹的模拟与实验结果基本一致，对比这两种条纹，可调试实际光学系统以获得适宜的像差系数，利于干涉图的数据提取。
횡향전절간섭순배경조문인래원우전절전후파면재중첩구적간섭，이수광학계통상차화부가상위적조제。근거횡향전절적성상이론，이용 Matlab 연건모의순배경조문，분석리초상차、구차등광학계통상차화부가상위차적영향。연구결과표명：조문적밀집도화형상수상차적영향흔대，수부가상위차정주기성분포。순배경조문적모의여실험결과기본일치，대비저량충조문，가조시실제광학계통이획득괄의적상차계수，리우간섭도적수거제취。
An interferogram is generated by the wavefront and its laterally shifted wavefront in the overlap area using lateral shearing interferometry.The background fringes obtained are related to the optical aber-ration.Based on the imaging theory,the background fringes were simulated by Matlab software.Defocus, spherical aberration and the extra phase difference were analyzed.The results indicated that the density and the shape of the fringes were affected greatly by the optical aberrations and periodic with the extra phase difference.The simulated background fringes are similar to the experimental one.After comparing this two results,the appropriate optical aberrations can be obtained by adapting the actual optical system is benefi-cial to the data extraction.