论文部分内容阅读
报道双层矩形相位光栅的变分束特性。改变入射光照明方向， 由同一双层矩形相位光栅获得了光束数分别为２、３、４ 和５， 总衍射效率高于７０％ 的扇出光。
The variational beam characteristics of double-layer rectangular grating are reported. By changing the illumination direction of incident light, the fan-out light whose number of beams are 2, 3, 4 and 5 respectively and whose total diffraction efficiency is higher than 70% is obtained by the same double-layer rectangular phase grating.