中文摘要：

利用数字化的干涉技术对受温度、压力、湍流等具有大畸变的动态变化场波前实现高速高精度实时化的检测是非常需要的。介绍了一种基于空间位相调制的径向剪切干涉系统，配以具有连续与脉冲光于一体的半导体泵浦固体激光器，结合一种新颖的高速图像采集同步控制系统，可以对各种连续及动态变化场波前实现共路干涉、无需参考面的瞬态、高精度的检测，波前图像采集频率在像素512×512时可达到1000帧／s以上。系统的波前重构理论都经过了计算机仿真验证，仿真精度达1／1000λ以上。与ZYGO数字波面干涉仪相比，检测结果RMS优于1／15h，并有很好的重复性；目前该系统已用于惯性约束聚变（ICF）等系统的脉冲波前检测，并且在航空航天、流体、流场的各类物理量的检测领域具有广泛的应用前景。

英文摘要：

It is necessary that the transient flow field which leads to variation of temperature, pressure, turbulent and etc. can be tested well by using real-time interferometry with high speed and precision. A radial shearing interferometer based on the method of spatial phase modulation was proposed. The system,which consisted of Nd： YLF diode pumped solid pulse laser of which wavelength is 1 053 nanometers, a novel synchronization control system of high speed imaging, can realize common-path interference, and transient, high speed measurement without reference surface for various wavefront of continuous and transient flow field. The speed of image acquisition in pixels dimensions 512×512 can reach 1000 frames per second. The theory of wavefront reconstruction was validated by the computer simulation with an 1/1000λ wavelength error. Comparing the system with ZYGO interferometer, the RMS error is better than 1/15A wavelength with good repeatability. The system has already been used in the Inertial Confined Fusion （ICF） system to test the pulse laser wavefront, and will probably be used in the fields where the wavefront distortions are so large that high speed and real-time testing must be required, for instance, aviation, space flight, aero-optical, etc.