| Multi-reference lens-less Fourier-transform holography with a Greek-ladder sieve array |
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| 作者姓名： | 谢静 张军勇 潘雪 周申蕾 马伟新 |
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| 作者单位： | Key Laboratory of High Power Laser and Physics;Shanghai Institute of Laser Plasma |
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| 基金项目： | supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2017292);the National Natural Science Foundation of China(Nos.61775222 and 11604350)。 |
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| 摘 要： | Lens-less Fourier-transform holography has been actively studied because of its simple optical structure and its single-shot recording.However,a low-contrast interferogram between the reference and object waves limits its signal to noise ratio.Here,multi-reference lens-less Fourier-transform holography with a Greek-ladder sieve array is proposed in the experiment and demonstrated effectively to improve the signal to noise ratio.The key technique in our proposed method is a Greek-ladder sieve array,which acts as not only a wave-front modulator but also a beam splitter.With advantages of the common path,single shot,and no need for a lens,this system has enormous potential in imaging and especially in extreme ultraviolet and soft X-ray holography.
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| 关 键 词： | digital HOLOGRAPHY DIFFRACTIVE lens X-ray imaging |
Multi-reference lens-less Fourier-transform holography with a Greek-ladder sieve array |
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| Jing Xie,Junyong Zhang,Xue Pan,Shenlei Zhou,Weixin Ma.Multi-reference lens-less Fourier-transform holography with a Greek-ladder sieve array[J].中国光学快报(英文版),2020(2):20-22. |
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| Authors: | Jing Xie Junyong Zhang Xue Pan Shenlei Zhou Weixin Ma |
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| Institution: | (Key Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Institute of Laser Plasma,China Academy of Engineering Physics,Shanghai 201800,China) |
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| Abstract: | Lens-less Fourier-transform holography has been actively studied because of its simple optical structure and its single-shot recording. However, a low-contrast interferogram between the reference and object waves limits its signal to noise ratio. Here, multi-reference lens-less Fourier-transform holography with a Greek-ladder sieve array is proposed in the experiment and demonstrated effectively to improve the signal to noise ratio. The key technique in our proposed method is a Greek-ladder sieve array, which acts as not only a wave-front modulator but also a beam splitter. With advantages of the common path, single shot, and no need for a lens, this system has enormous potential in imaging and especially in extreme ultraviolet and soft X-ray holography. |
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