中国物理B ›› 2016, Vol. 25 ›› Issue (2): 24202-024202.doi: 10.1088/1674-1056/25/2/024202

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

Lensless ghost imaging through the strongly scattering medium

Zhe Yang(杨哲), Lianjie Zhao(赵连洁), Xueliang Zhao(赵学亮), Wei Qin(秦伟), Junlin Li(李俊林)   

  1. 1. State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China;
    2. Quantum Engineering Research Center, Beijing Institute of Aerospace Control Devices, Beijing 100854, China;
    3. School of Physics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2015-12-17 修回日期:2015-12-23 出版日期:2016-02-05 发布日期:2016-02-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11175094 and 91221205), the National Basic Research Program of China (Grant No. 2015CB921002), and partially supported by the Basic Research Fund of Beijing Institute of Technology (Grant No. 20141842005).

Lensless ghost imaging through the strongly scattering medium

Zhe Yang(杨哲)1, Lianjie Zhao(赵连洁)2, Xueliang Zhao(赵学亮)1, Wei Qin(秦伟)3, Junlin Li(李俊林)1   

  1. 1. State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China;
    2. Quantum Engineering Research Center, Beijing Institute of Aerospace Control Devices, Beijing 100854, China;
    3. School of Physics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2015-12-17 Revised:2015-12-23 Online:2016-02-05 Published:2016-02-05
  • Contact: Junlin Li E-mail:center@mail.tsinghua.edu.cn
  • About author:10.1088/1674-1056/25/2/
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11175094 and 91221205), the National Basic Research Program of China (Grant No. 2015CB921002), and partially supported by the Basic Research Fund of Beijing Institute of Technology (Grant No. 20141842005).

摘要:

Lensless ghost imaging has attracted much interest in recent years due to its profound physics and potential applications. In this paper we report studies of the robust properties of the lensless ghost imaging system with a pseudo-thermal light source in a strongly scattering medium. The effects of the positions of the strong medium on the ghost imaging are investigated. In the lensless ghost imaging system, a pseudo-thermal light is split into two correlated beams by a beam splitter. One beam goes to a charge-coupled detector camera, labeled as CCD2. The other beam goes to an object and then is collected in another charge-coupled detector camera, labeled as CCD1, which serves as a bucket detector. When the strong medium, a pane of ground glass disk, is placed between the object and CCD1, the bucket detector, the quality of ghost imaging is barely affected and a good image could still be obtained. The quality of the ghost imaging can also be maintained, even when the ground glass is rotating, which is the strongest scattering medium so far. However, when the strongly scattering medium is present in the optical path from the light source to CCD2 or the object, the lensless ghost imaging system hardly retrieves the image of the object. A theoretical analysis in terms of the second-order correlation function is also provided.

关键词: lensless ghost imaging, second-order correlation, strongly scattering medium, robust property

Abstract:

Lensless ghost imaging has attracted much interest in recent years due to its profound physics and potential applications. In this paper we report studies of the robust properties of the lensless ghost imaging system with a pseudo-thermal light source in a strongly scattering medium. The effects of the positions of the strong medium on the ghost imaging are investigated. In the lensless ghost imaging system, a pseudo-thermal light is split into two correlated beams by a beam splitter. One beam goes to a charge-coupled detector camera, labeled as CCD2. The other beam goes to an object and then is collected in another charge-coupled detector camera, labeled as CCD1, which serves as a bucket detector. When the strong medium, a pane of ground glass disk, is placed between the object and CCD1, the bucket detector, the quality of ghost imaging is barely affected and a good image could still be obtained. The quality of the ghost imaging can also be maintained, even when the ground glass is rotating, which is the strongest scattering medium so far. However, when the strongly scattering medium is present in the optical path from the light source to CCD2 or the object, the lensless ghost imaging system hardly retrieves the image of the object. A theoretical analysis in terms of the second-order correlation function is also provided.

Key words: lensless ghost imaging, second-order correlation, strongly scattering medium, robust property

中图分类号:  (Image forming and processing)

  • 42.30.Va
42.25.Fx (Diffraction and scattering) 42.30.Lr (Modulation and optical transfer functions)