Achieving an ultra-uniform diffraction pattern of stray light with metallic meshes by using ring and sub-ring arrays

作者：Lu, Zhengang; Wang, Heyan; Tan, Jiubin^*; Ma, Limin; Lin, Shen

来源：Optics Letters, 2016, 41(9): 1941-1944.

DOI：10.1364/OL.41.001941

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We provide theoretical and experimental evidence that introducing metallic rings and sub-rings in mesh unit cells significantly decreases the high-order diffraction energy. Moreover, rotating the sub-rings results in increased uniformity in the diffraction distribution without affecting the transmittance. Experiments show that the triangular ring mesh with rotated sub-rings exhibits a normalized visible transmittance greater than 95% as well as an ultra-uniform diffraction pattern of stray light, whose maximal normalized high-order diffraction energy is lower than 0.0167%. This kind of metallic mesh will be favorable in transparent electromagnetic interference shielding devices and touch screens.

• 出版日期2016-5-1
• 单位哈尔滨工业大学