A Moving Wedge Fourier Spectrometer

A technology for moving optical wedges and spectrometers, applied in the field of spectroscopy, can solve the problems of low spectral resolution, achieve high spectral resolution, reduce the influence of uniform velocity errors of moving mirrors, and solve the problem of low spectral resolution

Active Publication Date: 2016-08-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to propose a moving optical wedge Fourier spectrometer to solve the problem of low spectral resolution in the prior art

Method used

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  • A Moving Wedge Fourier Spectrometer

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Embodiment Construction

[0022] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] See attached figure 1 , a moving wedge type Fourier spectrometer of the present invention comprises a light source system, a small hole 4, a collimating mirror 5, a diaphragm 6, a moving wedge interferometer, a reflector A12, a focusing mirror 13, a detector A14, a detection Device B15, detector C16 and reference optical path system;

[0024] The light emitted by the light source system passes through the small hole 4 to the collimating mirror 5, and the light reflected by the collimating mirror 5 is divided into three parallel beams of the same aperture through the diaphragm 6; the parallel light is interfered by the moving optical wedge Three beams of coherent light are formed behind the instrument, and the three beams of coherent light are respectively focused on the detector A14, the detector B15 and the detector C16 through three mirrors A12...

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Abstract

The invention belongs to the field of spectrum technologies, and provides a novel movable optical wedge type Fourier spectrometer. The novel movable optical wedge type Fourier spectrometer aims to solve the problem that the spectral resolution is low by means of existing movable optical wedge type Fourier spectrum technologies. Light rays emitted by a light source system penetrate through a small hole and reach a collimating mirror, and the light rays reflected by the collimating mirror are divided by a diaphragm into three beams of parallel light with the same aperture; the parallel light forms three beams of coherent light after passing through a movable optical wedge interferometer, and the three beams of coherent light are focused on a detector A, a detector B and a detector C through three reflectors and three focusing mirrors respectively; a reference light path system comprises a frequency stabilized laser and a laser detector, light emitted by the frequency stabilized laser is reflected by the reflectors and then passes through the movable optical wedge interferometer, so that interference light is obtained, and the interference light is focused on the laser detector after being reflected by the reflectors; the movable optical wedge interferometer changes optical path difference and receives and records interference light intensity varying with the optical path difference through the detector A, the detector B, the detector C and the laser detector respectively.

Description

technical field [0001] The invention belongs to the field of spectrum technology, in particular to a moving optical wedge Fourier spectrometer. Background technique [0002] Spectroscopic instruments are the basic test equipment for spectral analysis. Compared with traditional dispersive spectroscopic instruments, Fourier spectrometers are widely used due to their advantages of multi-channel, high throughput, low stray light, high wavenumber accuracy and high spectral resolution. In scientific research, material analysis, industrial testing, space remote sensing detection and other fields. [0003] The traditional time-type Fourier spectrometer has extremely strict requirements on the moving mirror system. The non-uniformity of the scanning speed of the moving mirror will lead to the sampling error of the interferogram. Affect the signal-to-noise ratio; compared with the traditional Michelson-type Fourier spectrometer, the moving optical wedge Fourier spectrometer has a dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28
Inventor 齐向东马振予唐玉国李晓天于海利崔继承
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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