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Device and method for measuring rapidly coherent backscattering using area array CCD

A technology of coherent backscattering and using area array, applied in the field of photon localized detection, can solve the problems of time-consuming and complex

Inactive Publication Date: 2008-06-18
SHANDONG UNIV
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Problems solved by technology

[0003] In order to overcome the defects and deficiencies of the above-mentioned prior art and solve the complicated and time-consuming problems existing in the current measurement of coherent backscattering, the present invention provides a device and method that can quickly and simply measure coherent backscattering, and can quickly obtain the Contains information about the photon mean free path

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  • Device and method for measuring rapidly coherent backscattering using area array CCD

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Embodiment

[0026] As shown in Figure 1, the device of the present invention includes: a laser 1 (polarized light output), an attenuator 2, a mirror 3, a spatial light filter beam expander collimator, a beam splitter 7, a light extinction device 9, a cylindrical lens 10, a micro Computer 12, surface array charge-coupled device CCD11 and plane mirror 13, characterized in that an attenuator 2 is placed behind the laser 1, and a reflector 3 is placed behind the attenuator 2; the spatial light filter beam expander collimator consists of two lenses 4, 6 It is composed of aperture stop 5, which is located in the middle of two lenses 4 and 6, and the spatial light filter beam expander collimator is located behind mirror 3 and before beam splitter 7; The extinction device 9 has a flat mirror 13 placed at the front end of the transverse direction, and a cylindrical lens 10 placed at the rear end of the transverse direction.

[0027] The design of the extinction device 9 is a black glass piece incl...

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Abstract

The invention provides a device and a method to survey coherent backscattering by using the area CCD and relates to the technical field of photon localization detection. The invention is the method to survey the data by using the area CCD and process two-dimensional data by means of one-dimensional integration, which significantly simplifies the complexity of the subsequent processing of the data, and puts the operation strength in the one-dimensional direction of non-integration by replacing a lens with a cylindrical lens in an ordinary light path. Accordingly, the original fitting formula can be used for fitting instead of processing after integration. In this way, the processing process is significantly simplified, and the processing time is reduced. In addition, the detailed information of the data is reserved.

Description

(1) Technical field [0001] The invention relates to the technical field of photon localization detection, a device and method for detecting the photon localization property of a sample, in particular to a device and method for rapidly measuring coherent backscattering by using an area array CCD. (2) Background technology [0002] Anderson localization is an important phenomenon proposed in research in the field of electronics, for which Anderson was awarded the Nobel Prize for his outstanding contributions. Its main feature is that the propagation of waves is hindered by the random distribution of the properties of the medium. So far, it has been widely studied and applied, and the phenomenon of localization has been observed in microwave experiments. Since its essence is derived from the wave nature of electromagnetic waves, and wave nature is one of the characteristics of light, people put forward the concept of photon localization. Photon localization is an analogy of A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45
Inventor 范书振张行愚王青圃张琛丛振华张晓磊秦增光张真刘兆军
Owner SHANDONG UNIV