An circular radial shearing interferometer based on spatial phase modulation is proposed to measure the transient near infrared laser pulse wavefront with high precision.

提出了一种基于空间相位调制技术可用于近红外瞬态波前高精度检测的环形径向剪切干涉仪。

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In addition to alternating phase difference between two aims of interferometer, the intensity of light of the interference fringes will vary in the same frequency, which is called as phase modulation.

当两相干光附加一按固定频率变化的相位差时，其干涉条纹的光强将随之交变，即为相位调制干涉。

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We also analysed the influence of amplitude modulation and frequency (or phase ) modulation on Interferometer Direction Finder.

对三波道干涉仪测向结果不受幅度调制和频率调制（相位调制）的影响进行了数学分析。

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