Method and device for calibrating vacuum ultraviolet spectral radiometers

Abstract

The invention relates to a method and a device for calibrating vacuum ultraviolet spectral radiometers. The method comprises spectral radiant luminance responsivity calibration, spectral radiant irradiance responsivity calibration and / or wavelength accuracy calibration, which are conducted in an oil-free vacuum chamber. The device comprises a spectral radiant luminance responsivity calibration mechanism, a spectral radiant irradiance responsivity calibration mechanism, and a wavelength accuracy calibration mechanism. There is no calibration device suitable for vacuum ultraviolet spectral radiometers in our country at present. By using the method and the device for calibrating vacuum ultraviolet spectral radiometers of the invention, the multiple parameters of a vacuum ultraviolet spectral radiometer can be calibrated in a ground laboratory before emission, and therefore, the accuracy of data acquired by the vacuum ultraviolet spectral radiometer is guaranteed. The method and the device are of great significance to the acquisition of spectral information of the sun, the earth surface and other sun-earth space environments.

Description

Technical field [0001] The invention relates to the technical field of optical testing equipment calibration, in particular to a calibration method and device for a vacuum ultraviolet spectroradiometer. Background technique [0002] Through the vacuum ultraviolet spectroradiometer calibration device, the calibration of multiple parameters such as spectral radiance responsivity, spectral radiance responsivity and wavelength accuracy of the vacuum ultraviolet spectroradiometer can be realized. [0003] The working spectrum of the vacuum ultraviolet spectroradiometer is just an important characteristic spectrum of space material composition, and it can give the vacuum ultraviolet spectrum information of the detection target at the same time. Its advantages make the vacuum ultraviolet spectroradiometer rapid progress in space technology and space The unprecedented development of scientific research has become the focus of attention of countries all over the world. It has been repeatedl...

AI Technical Summary

Problems solved by technology

At present, there is no calibration device suitable for vacuum ultraviolet spectroradiometers in China. Due to the serious absorption of light energy in the vacuum ultraviolet band in the atmosphere, it is impossible to carry out corresponding calibration work under non-vacuum conditions. A vacuum calibration environment must be provided to realize vacuum ultraviolet spectroscopy. Calibration of Radiometers

The calibration devices developed by other units in the early stage all work in a non-vacuum environment under atmospheric conditions, which are only suitable for visible light and infrared bands, and cannot meet the calibration requirements for vacuum ultraviolet spectroradiometers. The sub-components such as the color separation system and the collimation optical system cannot meet the performance index requirements of the vacuum ultraviolet band, and the calibration of the vacuum ultraviolet spectroradiometer cannot be realized.

As a result, the problem was discovered after it was carried into space, which seriously affected the normal progress of the space exploration program

Images