用亚波长正弦介质光栅设计1/4波片

详细信息

Design of quarter wave-plate using sinusoidal dielectric subwavelength gratings

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。
- 亚波长正弦介质光栅 /
- 反射型1/4波片 /
- 方位角 /
- 偏振光
Abstract: 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.
- sinusoidal dielectric subwavelength gratings /
- reflective quarter wave-plate /
- azimuth polarized light

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