Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence
Mingle Qiao,
Yongfang Xie,
Shihao Kang
et al.
Abstract:In this paper, a transmission two-dimensional (2D) all-dielectric grating with cuboid arrays is proposed, which has high diffraction efficiency and good polarization independence under Littrow mounting conditions at an incident wavelength of 780 nm. The optimization results indicate that when the incident wavelength is 780 nm, the diffraction efficiency of the (−1, 0) order of transverse electric (TE) and transverse magnetic (TM) polarizations can reach 98.62% and 98.23%, respectively, with the polarization-de… Show more
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