提出一种基于波导理论的针孔点衍射波前分析方法。该方法将针孔作为圆形波导,采用解析法求解波导的模式进而得到针孔后端面电场分......

The frequency stability of an all-solid-state Nd:YVO4 laser is significantly improved by means of a specially designed F......

A novel no-guide light pen type 3D-coordinate measurement system with three sets of position sensitive devices (PSDs) to......

This letter describes a novel optical method for wavelength fine-selection in the optical spectrum analysers (OSAs) for ......

Based on total reflection principle, a compact liquid-refractive index measuring equipment was designed and fabricated, ......