摘要
采用扩展边界条件法 ,得出亚波长正弦介质光栅正入射反射型 1/ 4波片的结构参数。发现在一定精度范围内TE波与TM波的相位差能够在一段较大的槽深区域满足设计要求 ,从而降低了实际控制刻蚀深度的难度。讨论了线偏振光转化为圆偏振光的方位角问题。
The paper puts forward configurable parameter of reflective quarter wave-plate at normal incidence with extended boundary condition method due to absent report about reflective quarter wave-plates made of gratings. we find phase difference between TE wave and TM wave can satisfy designed requisition at some accuracy in a long span of groove depth which can reduce practical difficulty of etching groove depth,but papers issued before always require strict etching groove depth. Azimuth problem when lineary polarized light transforms circinal polarized light is discussed at the same time.
出处
《激光技术》
CAS
CSCD
北大核心
2003年第4期368-370,共3页
Laser Technology
关键词
亚波长正弦介质光栅
反射型l/4波片
方位角
偏振光
sinusoidal dielectric subwavelength gratings
reflective quarter wave-plate
azimuth
polarized light
