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Complex-amplitude object reconstruction device based on optical scanning holography

A holographic technology and optical scanning technology, applied in the field of complex amplitude object reconstruction devices, can solve the problems of high optical path requirements, complex structure, unfavorable technology research and application, etc., and achieve the goal of easy adjustment, easy realization, and good biomedical application prospects Effect

Active Publication Date: 2017-09-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, this structure is relatively complicated, requiring an additional Fourier lens, and inserting a pinhole screen after the lens, and the pinhole screen must be placed at the back focal plane to satisfy the Fourier transform relationship, which requires relatively high requirements on the optical path. High, not conducive to the research and application of this technology

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  • Complex-amplitude object reconstruction device based on optical scanning holography
  • Complex-amplitude object reconstruction device based on optical scanning holography
  • Complex-amplitude object reconstruction device based on optical scanning holography

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0026] see first figure 1 , figure 1 It is a system principle diagram of the complex amplitude object reconstruction device based on the optical scanning holography technology of the present invention. It can be seen from the figure that Embodiment 1 of the complex amplitude object reconstruction device based on optical scanning holography technology of the present invention comprises a difference frequency laser coherent unit, a two-dimensional scanning unit, a photoelectric information receiving and processing unit, and a computer reconstruction complex amplitude unit. The specific structure is In the laser output direction of the laser 1 is the first beam splitter 2, which divides the incident light into a perspective light path and a reflection light path. Mirror 4, p...

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Abstract

A complex-amplitude object reconstruction device based on optical scanning holography technology, including a difference-frequency laser coherent unit, a two-dimensional scanning unit, a photoelectric information receiving and processing unit, and a computer reconstruction complex-amplitude unit. The invention realizes the reconstruction of the complex amplitude object based on the difference frequency scanning technology, which is simpler and easier to implement than the existing coherent optical scanning holographic technology. The present invention is used in biological microscopy, especially in the field of detection of transparent or weakly absorbing biological samples, and has advantages over other biological imaging technologies. It can realize coherent imaging under the premise of ensuring the imaging resolution, and the obtained samples are more related to the refractive index. information, so it has very good biomedical application prospects.

Description

technical field [0001] The invention relates to three-dimensional imaging of coherent objects in the field of biomedicine, in particular to a complex-amplitude object reconstruction device based on optical scanning holography technology. technical background [0002] Optical Scanning Holography (OSH for short) is a new type of digital holography technology, which was jointly proposed and gradually improved by Professor Ting-Chung Poon of Virginia Tech University and his collaborators. At present, the applied research on OSH has been carried out in many scientific research fields, and a lot of achievements have been obtained in both theory and experiment. Prior technology (T.-C.Poon and A.Korpel, "Optical transfer function of an acoustic to-optic heterodyning imageprocessor," Opt. Lett.4, 317-319 (1979)) for the non-coherent image processing, the difference-frequency coherent The concept of acousto-optic heterodyne modulation is used to generate time-domain difference freque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/10G03H1/22G03H1/00
Inventor 贾伟周常河余俊杰
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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