Parameter calibration system of acousto-optic tunable filter

Abstract

The invention provides a parameter calibration system of an acousto-optic tunable filter, comprising a controlling and processing computer, an optical grating monochrometer, a mercury argon gas light source, an optical path section, a precision electronic control rotary table, a high-precision radio frequency driver, a photomultiplier, a CCD light distribution detector and a precision electronic control translation guide rail; and the optical path section is mainly composed of a reflecting mirror, a semi-transparent semi-reflective lens, a Glan-Taylor prism, a collimating lens, an aperture and a focusing lens. The invention has complete calibrating system and high calibrating precision, can carry out automatic calibration on parameters like AOTF light beam incident angle, the off-axis angle theta alpha, the angular aperture delta, wavelength response function, wavelength frequency tuning relation, deflection angle beta and the like, is applicable to the index inspection of the AOTF product, the research of AOTF light spectrum and imaging characteristics, and provides technical parameters for the integration of AOTF spectrometer.

Description

Technical field [0001] The invention relates to an acousto-optic tunable filter parameter calibration system, which can adjust the incident angle of the acousto-optic tunable filter (Acousto-optic Tunable Filter, hereinafter referred to as AOTF) beam incident angle and ultrasonic off-axis angle θ α , Angular aperture δ, wavelength response function, wavelength frequency tuning relationship, deflection angle β and other parameters are automatically calibrated, which is suitable for AOTF product index inspection, AOTF spectrum and imaging characteristics research, and can also provide technical parameters for the integration of AOTF spectrometer. Background technique [0002] AOTF is made according to the principle of acousto-optic diffraction, and has the functions of modulating, deflecting and filtering light. Its working principle is to rely on the change of electrical signal frequency to achieve the purpose of wavelength selection. AOTF spectrometer is a new type of spectrometer...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an acousto-optic tunable filter parameter calibration system, to overcome the existing AOTF calibration device complicated and incomplete, calibration accuracy is not high, low degree of automation and other shortcomings, to design a set of Realize automatic, high-precision, multi-parameter calibration AOTF system

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