Non-refrigeration photoelectric detector relative spectrum response temperature characteristic calibration method

Abstract

The invention provides a non-refrigeration photoelectric detector relative spectrum response temperature characteristic calibration method. The monochromatic light is collected in a vacuum temperaturecontrol system by an off-axis optical system at the output of a monochromator and is received by a standard detector in the vacuum temperature control system. An output signal of the detector is amplified and then sent to a data acquisition system, and change of the output wavelength of the monochromator is controlled by the controller. During measurement, the standard detector is firstly calibrated in the vacuum temperature control system, then the standard detector is removed through a precise displacement turning table, a measured detector is turned to the same position, after the vacuum system reaches the set state, a thermostat is set to be in different temperatures, after temperature stabilization, non-refrigeration photoelectric detector relative spectrum response measurement underdifferent temperatures is carried out. The method is advantaged in that not only can the monochromatic light be prevented from irradiating onto the detected infrared detector, but also interference because of frosting and steam generation on the surface of a non-refrigeration photoelectric detector caused by increase or decrease of the surrounding temperature can be avoided.

Description

technical field [0001] The invention belongs to the technical field of temperature characteristic calibration, and in particular relates to a method for calibrating the relative spectral response temperature characteristic of an uncooled photodetector. Background technique [0002] At present, the domestic measurement of the relative spectral response of uncooled photodetectors only exists at room temperature, and there is no measurement of the temperature characteristics of the relative spectral response of uncooled photodetectors. Calibration of temperature characteristics, the calibration of the relative spectral response temperature characteristics of uncooled photodetectors is still in a blank state, generally for the spectral response of uncooled photodetectors at different temperatures, the value at normal temperature is also used, for uncooled photodetectors For photodetector users, the measurement and calibration of uncooled photodetectors cannot be traced and confi...

AI Technical Summary

Problems solved by technology

Using this method, when the monochromatic light is irradiated on the surface of the tested detector, when the ambient temperature rises or falls, the surface of the uncooled infrared detector will frost and generate water vapor, which will affect the test effect and accuracy.

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