Light splitting method for multi-light-path interferometer, and multi-light-path interferometer adopting light splitting method

An interferometer and multi-path technology, applied in the field of spectroscopy, can solve problems such as poor detection stability, high calibration accuracy requirements, and low spectral resolution

Active Publication Date: 2014-08-06
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0006] In order to solve the problems of low spectral resolution, high calibration precision requirements and poor detection stability in the existing interferometer, the present invention provides a high-throughput, multi-channel, high spectral resolution, low stray light, and calibration precision Time-modulated interferometer spectroscopic method with relatively low cost, short measurement time, and easy engineering implementation, and an interferometer using the method

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  • Light splitting method for multi-light-path interferometer, and multi-light-path interferometer adopting light splitting method
  • Light splitting method for multi-light-path interferometer, and multi-light-path interferometer adopting light splitting method

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Embodiment Construction

[0041] see figure 1 , figure 2 , the spectroscopic method of multi-optical path interferometer involved in the present invention, it is mainly realized by the following steps:

[0042] Step a: Collecting and collimating the target radiation light to transform the target radiation light into parallel light;

[0043] Step 1: splitting the parallel light in step a) to form a first ray and a second ray;

[0044] Step 2: The first light reaches the static arm of the interferometer, returns after being reflected by the static arm, and forms the first transmitted light and the first reflected light after passing through the beam splitter; the second light reaches the boom of the interferometer;

[0045] Step 3: The second ray is processed by the boom, which is specifically implemented by the following steps:

[0046] 3.1) Divide each reflective surface of the corner mirror into two areas within the effective light aperture of the corner mirror, namely the incident area and the ex...

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Abstract

The invention relates to a light splitting method for a multi-light-path interferometer, and a multi-light-path interferometer adopting the light splitting method. The multi-light-path interferometer comprises a beam splitter, a movable arm component and a static arm component which are arranged on a light transmission line sequentially, wherein the movable arm component and the static arm component are arranged on an emergent light path of the beam splitter; the movable arm component comprises an angle mirror and a refraction and reflection mirror group; and the refraction and reflection mirror group is arranged on an emergent light path of the angle mirror. The spectral resolution of the interferometer is improved greatly, the control driving difficulty in a movable mirror of a time modulation type interferometer and the design difficulty in a supporting system of the angle mirror of the time modulation type interferometer are reduced, and the diversity of design methods is improved.

Description

technical field [0001] The invention belongs to the field of spectrum technology, and relates to a spectroscopic method of a cube-corner-based multi-optical path interferometer and an interferometer applying the method. Background technique [0002] Spectroscopy is an important means to obtain material structure and chemical composition, determine the content of material elements, and study atomic energy levels. It has been widely used in industrial and agricultural production, scientific research, environmental monitoring, aerospace remote sensing and other fields. Spectral technology can be divided into four types: filter type, dispersion type, interference type and computed tomography type. Among them, the filter type refers to the use of optical filters for light splitting, which is called the first generation of light splitting technology according to the characteristics of light splitting. It can only measure the spectrum of a substance at a single or a few wavelength...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/26G01J3/45
Inventor 魏儒义周锦松张学敏周泗忠
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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