title: Focusing single-order diffraction transmission grating with a focusing plane perpendicular to the grating surface.
abstract: By combining the single-order dispersion properties of quasi-sinusoidal single-order diffraction transmission gratings (QSTG) and the single-foci focusing properties of annulus-sector-shaped-element binary Gabor zone plate (ASZP), we propose a novel focusing single-order diffraction transmission grating (FSDTG). Different from the diffraction patterns of a normal transmission grating (TG), it has a focusing plane perpendicular to the grating surface. Numerical simulations are carried out to verify its diffraction patterns in the framework of Fresnel-Kirchhoff diffraction. Higher-order diffraction components of higher harmonics can be effectively suppressed by the FSDTG we designed. And we find that the focal depth and resolving power are only determined by the structure parameters of our FSDTG by theoretical estimations.
authors.forename: Quanping
authors.initials: Q
authors.lastname: Fan
authors.forename: Yuwei
authors.initials: Y
authors.lastname: Liu
authors.forename: Zuhua
authors.initials: Z
authors.lastname: Yang
authors.forename: Lai
authors.initials: L
authors.lastname: Wei
authors.forename: Qiangqiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.forename: Feng
authors.initials: F
authors.lastname: Hu
authors.forename: Chuanke
authors.initials: C
authors.lastname: Wang
authors.forename: Yuqiu
authors.initials: Y
authors.lastname: Gu
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhou
authors.forename: Gang
authors.initials: G
authors.lastname: Jiang
authors.forename: Leifeng
authors.initials: L
authors.lastname: Cao