We propose a scheme to realize super sub-wavelength interference in virtue of high-order spatial correlation with a programmable light source, which can be applied to enhance precision in measurement and control. In this proposal, the light source is produced by modulating the wavefront of a laser beam randomly in time with a phase-only spatial light modulator (SLM). Combing the intensity patterns measured by a CCD camera and the computed intensity patterns using the phase masks loaded on the SLM, the super sub-wavelength interference pattern of an object can be obtained by using high-order spatial correlation measurement. The resolution of the interference pattern can, in principle, be arbitrarily high, and a higher resolution can be obtained as the order of the correlation function increases.

我们提出了一种通过与可编程光源的高阶空间相关来实现超亚波长干扰的方案，该方案可用于提高测量和控制的精度。在该建议中，光源是通过仅相位空间光调制器（SLM）在时间上随机调制激光束的波前而产生的。通过将CCD摄像机测量的强度模式与使用SLM上加载的相位掩模计算出的强度模式进行组合，可以通过使用高阶空间相关性测量获得对象的超亚波长干涉模式。干涉图案的分辨率原则上可以任意高，并且随着相关函数的阶数增加，可以获得更高的分辨率。