Double-sided reflecting moving mirror interferometer

Abstract

The invention relates to an interferometer, in particular to a double-sided reflecting moving mirror interferometer, which can solve the inclination and transverse movement problems of a moving mirror, requires a small driving force, can obtain very high spectral resolution and has good heat stability. The interferometer comprises a beam splitter, a planar mirror, a double-sided reflecting moving mirror, an angle reflecting body, a double-sided reflecting mirror driving system and a detecting and collecting system, wherein the beam splitter splits incident light into reflected light and transmitted light; the planar mirror and the angle reflecting body are arranged on two light paths respectively; the double-sided reflecting moving mirror is arranged on reflecting light paths of the planar mirror and the angle reflecting body; the double-sided reflecting moving mirror reflects incident light which enters the double-sided reflecting moving mirror and reflects the incident light reflected by the planar mirror to the beam splitter; and the detecting and collecting system is arranged on an emergent light path which is finally transmitted or reflected by the beam splitter. The double-sided reflecting moving mirror is used, so that the transverse movement problem of the moving mirror is solved; an interference light path is adopted, so that the inclination problem of the moving mirror is solved; and the interferometer has the advantages of simple structure, small volume, light weight and small required driving force.

Description

Technical field [0001] The invention relates to an interferometer, in particular to a double-sided reflective moving mirror interferometer applied to a Fourier transform spectrometer with high spectral resolution. Background technique [0002] The time-modulated Fourier transform spectrometer has the advantages of high spectral resolution, high throughput, multi-channel, etc. It is very suitable for atmospheric remote sensing and ultra-fine spectrum measurement. Its core component is an interference system. The biggest problem that affects the application of Michelson interferometer in Fourier transform spectrometer is the tilt of the plane moving mirror during scanning. [0003] Using cat glasses or corner reflectors instead of flat moving mirrors can solve the tilt problem well. The disadvantage is that a single scanning cat glasses or a single scanning corner reflector has a lateral offset problem. Another method is to use an adaptive correction system, but the higher the resol...

AI Technical Summary

Problems solved by technology

[0004] The mass of the cat's eye mirror or the corner reflector mirror is large, and the driving force required for the mirror is large, and the volume of the cat's eye mirror is large and the thermal stability is poor

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