Linear dispersion combined prism optical splitter

A prismatic beam splitting and prism technology, applied in prisms, optical components, optics, etc., can solve the problems of OASIS system dispersion nonlinear defects that have not been well improved, difficult key parameters, and increased system assembly and adjustment difficulties.
CN104808346AActive Publication Date: 2015-07-29SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
Publication Date
2015-07-29

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Abstract

The invention discloses a linear dispersion combined prism optical splitter. The linear dispersion combined prism optical splitter is formed by combining two prisms which are manufactured from special materials and coated with films on the side surfaces by a mode of enabling the bottom surfaces to be clung to each other and the film-coated surfaces to be opposite to each other. The linear dispersion combined prism optical splitter is particularly suitable for the fields of spectrum analysis, spectrum detection and related fields. The linear dispersion combined prism optical splitter is on the basis of the control variable method and differential equation concept; the spreading direction of the line and the shape of the prisms are controlled according to the dispersion property of the first prism material; the nonlinear dispersion of the first prism is compensated according to the nonlinear dispersion of the second prism so as to obtain the linear dispersion combined prism optical splitter. The linear dispersion combined prism optical splitter can overcome the defect of nonlinear dispersion of single prism and has the advantages of being wide in free spectrum range, high in light energy utilization rate, high in generality, simple in structure, and small in cost.
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Description

technical field

[0001] The present invention relates to a prism light-splitting device, in particular to a linear dispersion combined prism light-splitting device, which is a combined prism composed of two prisms with specially selected materials and side coatings according to the method of "the bottom surfaces are attached to each other, and the coating surfaces are opposite". In spectral detection, analysis and other related fields. Background technique

[0002] First of all, it is necessary to clarify such a concept that the dispersion of a material is caused by its refractive index as a function of wavelength. When the refractive index of the material is a function of wavelength, the material has linear dispersion characteristics; when the refractive index of the material is a high-order function of wavelength, the material has nonlinear dispersion characteristics. The dispersion characteristics of a prism are characterized by the relationship between the deflection ang...

Claims

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