4f phase coherent imaging method based on michelson interferometer

A technology of phase coherence and imaging method, which is applied in the field of nonlinear photonics materials and nonlinear optical information processing, can solve the problems of high noise and laser stability, complex data processing, and small deformation range, etc. Simple quality and optical path requirements, simple data processing, and easy data processing effects

Inactive Publication Date: 2008-03-26
HARBIN INST OF TECH
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Problems solved by technology

[0005] The present invention solves the troublesome data processing of the traditional 4f system coherent imaging technology, the unavoidable nonlinear absorption, and the small deformation range ...

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  • 4f phase coherent imaging method based on michelson interferometer
  • 4f phase coherent imaging method based on michelson interferometer
  • 4f phase coherent imaging method based on michelson interferometer

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specific Embodiment approach 1

[0022]Embodiment 1: Referring to FIGS. 1 to 5 , the method for completing the present embodiment adopts a device with the following structure. The device consists of a first linear attenuation plate 1 , a first total reflection mirror 2 , a first aperture stop 3 , and a second Total reflection mirror 4 , second aperture stop 5 , first beam splitter 6 , second beam splitter 7 , first convex lens 8 , second convex lens 10 , second linear attenuator 11 , third beam splitter 12 , CCD camera 13 , the third convex lens 14, the third total reflection mirror 15, the fourth total reflection mirror 18, the fourth convex lens 19, the fifth convex lens 20 and the laser 21, the fourth convex lens 19, the first linear attenuation plate 1, the fifth convex lens 20 , the first beam splitter 6, the second aperture stop 5 and the second total reflection mirror 4 are arranged in sequence on the central axis of the upper side of the laser 21, the optical axis axis of the transmitted light of the f...

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Abstract

The coherent imaging method of 4f position based on the Michelson's interferometer is the nonlinear refractive method of 4f position coherent imaging measuring medium based on the Michelson's interferometer. It can solves the problem of data treating bother, nonlinear absorption of traditional 4f coherent imaging technology and the small deform range, high request for stability and complex data treating of Mach-Zehnder interference. The method is composed of the processes: one: starting and adjusting the device; two: collecting the image without image; three: collecting the linear image; four: collecting the nonlinear image; five: computing the linear penetrant ratio; six: computing the nonlinear phase movement; seven: computing the third-order nonlinear refraction coefficient.

Description

technical field [0001] The invention relates to a method for measuring the nonlinear refraction properties of a medium based on the Michael interferometer 4f coherent phase imaging technology, which belongs to the fields of nonlinear photonics materials and nonlinear optical information processing. Background technique [0002] With the rapid development of optical communication and optical information processing, the research of nonlinear optical materials is becoming more and more important. The realization of functions such as optical switching, phase complex conjugation, optical limiting and optical modulation mainly depends on the research progress of nonlinear optical materials, and optical nonlinear measurement technology is one of the key technologies in the study of nonlinear photonic materials. At present, the commonly used methods for measuring nonlinear optical parameters include Z-scan, 4f system coherent imaging technology, Mach-Zehnder interferometry, four-wav...

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Application Information

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IPC IPC(8): G01N21/45G06F19/00
Inventor 李云波潘广飞宋瑛林杨昆王玉晓张学如
Owner HARBIN INST OF TECH
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