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JIMIN FANG1, BO WANG1,* , CHEN FU1, SUFANG YIN1, ZIMING MENG1, ZHAOGANG NIE1, XIANGJUN XING1, LI CHEN1, LIANG LEI1, JINYUN ZHOU1
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
A novel wideband three layer high efficiency m etal mirror based grating is designed and investigated. It consists of an Ag slab and a three lay er rectangular groove dielectric grating structure . Both TE and TM polarization s exhibit high efficiency in 1st order with good angular bandwidth and spectral bandwidth . Compared with the reported high efficiency grating, the efficiency can be improved. M oreover, a wide spectral width of 150 nm and a broad angular width of 5 .6 can be shown. The modal method and rigorous coupled wave analysis are used together to study grating parameters in this optimization.
Three layer grating, Metal mirror based structure, Polarization independence.
Submitted at: Sept. 22, 2019
Accepted at: Aug. 18, 2020
JIMIN FANG, BO WANG, CHEN FU, SUFANG YIN, ZIMING MENG, ZHAOGANG NIE, XIANGJUN XING, LI CHEN, LIANG LEI, JINYUN ZHOU, Three layer high efficiency wideband metal mirror based grating, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 7-8, pp. 333-338 (2020)
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