Tango W J, Twiss R Q
Appl Opt. 1974 Aug 1;13(8):1814-9. doi: 10.1364/AO.13.001814.
Diffraction caused by finite apertures in long baseline interferometers leads to a significant loss of signal, decreased fringe visibility, and a phase shift in the interference pattern. Formulas are developed for the general case of an interferometer with unequal path lengths for monochromatic plane wave illumination. Numerical results are given for a range of path lengths. The consequences of diffraction on the performance of long path instruments, particularly with reference to a long baseline Michelson stellar interferometer, are discussed.
长基线干涉仪中有限孔径引起的衍射会导致信号显著损失、条纹可见度降低以及干涉图样中的相移。针对单色平面波照明下光程长度不等的干涉仪的一般情况推导了公式。给出了一系列光程长度的数值结果。讨论了衍射对长光程仪器性能的影响，特别是对于长基线迈克尔逊恒星干涉仪。
