High-efficiency polarization-independent diffraction by transmission grating with a connecting layer

2013 ◽  
Vol 45 ◽  
pp. 424-427
Author(s):  
Bo Wang ◽  
Liang Lei ◽  
Li Chen ◽  
Jinyun Zhou
Keyword(s):  
High Efficiency ◽  
Transmission Grating ◽  
Polarization Independent

High-efficiency, polarization-independent back reflector

2021 ◽  
Vol 479 ◽  
pp. 126320
Author(s):  
Kan Li ◽  
Tingting Zheng ◽  
Xiaowen Zheng ◽  
Chenying Yang ◽  
Yueguang Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Back Reflector ◽  
Polarization Independent

Investigation on multilayer microstructure grating for three-port splitting

2016 ◽  
Vol 30 (16) ◽  
pp. 1650195
Author(s):  
Wenhao Shu ◽  
Bo Wang ◽  
Hao Pei ◽  
Hongtao Li ◽  
Li Chen ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Single Layer ◽  
Zeroth Order ◽  
First Order ◽  
Transmission Grating ◽  
Dielectric Layers ◽  
Incident Waves ◽  
Reflection Grating ◽  
Independent Property ◽  
Polarization Independent

A new structure of microstructure reflection three-port beam splitter grating is described in this paper. The grating includes two dielectric layers and a metal slab on the substrate, where incident waves are reflected into the zeroth-order and the ± first-order with polarization-independent property. With the optimized grating profile, reflection efficiencies’ ratios between the first-order and the zeroth-order can reach 0.998 and 1.001 for TE and TM polarizations, respectively. Especially, the reflection grating can diffract efficiencies more than 30% into the ± first-order and the zeroth-order with the incident angular bandwidth of −1.9–1.9[Formula: see text] for TM polarization, which can have merits compared with single-layer transmission grating.

High efficiency focusing vortex generation and detection with polarization-insensitive dielectric metasurfaces

Nanoscale ◽  
2018 ◽  
Vol 10 (40) ◽  
pp. 19154-19161 ◽  
Author(s):  
Kai Ou ◽  
Guanhai Li ◽  
Tianxin Li ◽  
Hui Yang ◽  
Feilong Yu ◽  
...  
Keyword(s):  
Near Infrared ◽  
High Efficiency ◽  
Vortex Beam ◽  
Vortex Generation ◽  
Polarization Insensitive ◽  
Polarization Independent

High-efficiency and polarization-independent focused vortex beam generators and detectors are realized and demonstrated with all dielectric metasurfaces in near-infrared regime.

Polarization-Independent Multilayer Slanted Grating with High Efficiency and Broad Spectral and Angular Bandwidths Under Normal Incidence

2020 ◽  
Vol 40 (14) ◽  
pp. 1405001
Author(s):  
鲁云开 Lu Yunkai ◽  
余俊杰 Yu Junjie ◽  
尹正坤 Yin Zhengkun ◽  
周常河 Zhou Changhe
Keyword(s):  
High Efficiency ◽  
Normal Incidence ◽  
Polarization Independent
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