La0.8Sr0.2MnO3 samples with rhombohedral, orthohombic and monoclinic structures were prepared by solid state reaction, s......

<正>Stray light analysis of a three-mirror spatial optical system is presented.The entrance pupil diameter (EPD) of the ......

A new method of fringe multiplication is presented in this paper.The method is simpleand applicable.Only one polarizer a......