1. Higher-order diffraction suppression of free-standing quasiperiodic nanohole arrays in the x-ray region.
- Author
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Hailiang Li, Lina Shi, Lai Wei, Changqing Xie, and Leifeng Cao
- Subjects
- *
DIFFRACTION gratings , *X-rays , *SPECTRUM analysis , *METALLIC films , *NANOSTRUCTURES - Abstract
Nanohole array is particularly advantageous for light field manipulation. Here, we report a strategy to mimic the function of x-ray transmission gratings with free-standing quasiperiodic nanohole array. An analytical description is developed to reveal the physical mechanism of the free-standing quasiperiodic nanohole array that reduces higher-order contamination, and is verified by rigorous numerical simulations. An x-ray free-standing quasiperiodic nanohole array consisting of 1.6×109 nanoholes over an active area of 10 mm × 10 mm was fabricated. Experimental results of nearcomplete suppression of higher-order diffractions were obtained in the x-ray region. The capability to separate multiple overlapping orders makes this kind of nanohole array attractive for future development and application of high-resolution spectroscopy. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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