Subwavelength Fourier-transform imaging without a lens or a beamsplitter

doi:10.1088/1674-1056/23/5/054202

中国物理B ›› 2014, Vol. 23 ›› Issue (5): 54202-054202.doi: 10.1088/1674-1056/23/5/054202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Subwavelength Fourier-transform imaging without a lens or a beamsplitter

刘瑞丰, 袁新星, 方一珍, 张沛, 周宇, 高宏, 李福利

MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China

收稿日期:2013-06-25 修回日期:2013-10-14 出版日期:2014-05-15 发布日期:2014-05-15
基金资助:
Project supported by the Fundamental Research Funds for the Central Universities of China, the Special Prophase Project on the National Basic Research Program of China (Grant No. 2011CB311807), the National Basic Research Program of China (Grant No. 2010CB923102), and the National Natural Science Foundation of China (Grant Nos. 11004158, 11074198, and 11074199).

Subwavelength Fourier-transform imaging without a lens or a beamsplitter

Liu Rui-Feng (刘瑞丰), Yuan Xin-Xing (袁新星), Fang Yi-Zhen (方一珍), Zhang Pei (张沛), Zhou Yu (周宇), Gao Hong (高宏), Li Fu-Li (李福利)

MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China

Received:2013-06-25 Revised:2013-10-14 Online:2014-05-15 Published:2014-05-15
Contact: Li Fu-Li E-mail:flli@mail.xjtu.edu.cn
About author:42.25.Fx; 42.30.Va; 33.20.Ea
Supported by:
Project supported by the Fundamental Research Funds for the Central Universities of China, the Special Prophase Project on the National Basic Research Program of China (Grant No. 2011CB311807), the National Basic Research Program of China (Grant No. 2010CB923102), and the National Natural Science Foundation of China (Grant Nos. 11004158, 11074198, and 11074199).

摘要/Abstract

摘要： The fourier-transform patterns of an object are usually observed in the far-field region or obtained in the near-field region with the help of lenses. Here we propose and experimentally demonstrate a scheme of Fourier-transform patterns in the Fresnel diffraction region with thermal light. In this scheme, neither a lens nor a beamsplitter is used, and only one single charge coupled device (CCD) is employed. It means that dividing one beam out of a light source into signal and reference beams is not as necessary as the one done by the use of a beamsplitter in usual ghost interference experiments. Moreover, the coincidence measurement of two point detectors is not necessary and data recorded on a single CCD are sufficient for reconstructing the ghost diffraction patterns. The feature of the scheme promises a great potential application in the fields of X-ray and neutron diffraction imaging processes.

关键词: thermal light, Fourier imaging, intensity correlation

Abstract: The fourier-transform patterns of an object are usually observed in the far-field region or obtained in the near-field region with the help of lenses. Here we propose and experimentally demonstrate a scheme of Fourier-transform patterns in the Fresnel diffraction region with thermal light. In this scheme, neither a lens nor a beamsplitter is used, and only one single charge coupled device (CCD) is employed. It means that dividing one beam out of a light source into signal and reference beams is not as necessary as the one done by the use of a beamsplitter in usual ghost interference experiments. Moreover, the coincidence measurement of two point detectors is not necessary and data recorded on a single CCD are sufficient for reconstructing the ghost diffraction patterns. The feature of the scheme promises a great potential application in the fields of X-ray and neutron diffraction imaging processes.

Key words: thermal light, Fourier imaging, intensity correlation

中图分类号: (Diffraction and scattering)

42.25.Fx

42.30.Va (Image forming and processing) 33.20.Ea (Infrared spectra)

刘瑞丰, 袁新星, 方一珍, 张沛, 周宇, 高宏, 李福利. Subwavelength Fourier-transform imaging without a lens or a beamsplitter[J]. 中国物理B, 2014, 23(5): 54202-054202.

Liu Rui-Feng (刘瑞丰), Yuan Xin-Xing (袁新星), Fang Yi-Zhen (方一珍), Zhang Pei (张沛), Zhou Yu (周宇), Gao Hong (高宏), Li Fu-Li (李福利). Subwavelength Fourier-transform imaging without a lens or a beamsplitter[J]. Chin. Phys. B, 2014, 23(5): 54202-054202.

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Subwavelength Fourier-transform imaging without a lens or a beamsplitter

Subwavelength Fourier-transform imaging without a lens or a beamsplitter

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