Determination and correction of quadrature fringe measurement errors in interferometers 论文

详细信息

发表期刊/会议

Applied Optics

发表日期

1981-10-01

发表年份

1981

摘要

The precision and accuracy of interferometers using quadrature fringe detection are often limited not by the interferometer itself but by the detector system. There are three typical errors: unequal gain in the two channels; quadrature phase shift error; and zero offsets. This paper describes a simple method for determining the quadrature errors from experimental data obtained in the interferometer and correcting for them. A numerical example demonstrating the significant improvement in the precision of interferometer data is given.