Single-order soft x-ray spectra with spectroscopic photon sieve |
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Authors: | Yu-Lin Gao Lai Wei Qiang-Qiang Zhang Zu-Zua Yang Wei-Min Zhou Lei-Feng Cao |
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Affiliation: | (Hi-tech Research and Development Centre,China Academy of Engineering Physics,Beijing 100094,China;China Jiuyuan Hi-Tech Equipment Corporation Limited,Beijing 100094,China;National Key Laboratory for Laser Fusion,Research Center of Laser Fusion,Mianyang 621900,China) |
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Abstract: | A single-order diffraction transmission grating named spectroscopic photon sieve(SPS) for soft x-ray region is proposed and demonstrated in this paper. The SPS consists of many circular pinholes located randomly, and can realize both free-standing diffractions and the suppression of higher-order differations. In this paper, the basic concept, numerical simulations, and calibration results of a 1000-lines/mm SPS for soft x-ray synchrotron radiation are presented. As predicted by theoretical calculations, the calibration results of a 1000-lines/mm SPS verify that the higher-order diffractions can be significantly suppressed along the symmetry axis. With the current nanofabrication technique, the SPS can potentially have a higher line density, and can be widely used in synchrotron radiation, laser-induced plasma diagnostics, and astrophysics. |
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