Performance testing method and device for dual optical path switching mutual reference high precession AOTF

Abstract

The invention discloses a performance testing method and device for a dual optical path switching mutual reference high precession AOTF. According to the testing method, stable switching of detecting optical path+-1 level can be achieved by using an optical path switching component, stable alternating tests of an optical path can be achieved by using a detector rotary device, and the influences of optical energy instability, response inconstancy of an energy meter probe and the like on testing results can be effectively removed. The performance testing method and device for the dual optical path switching mutual reference high precession AOTF have the advantages that the optical path tested is compact, the testing steps are simple, clear and easy to operate, the data processing method and procedures are clear, the testing accuracy and the system stability are improved, and meanwhile high-efficiency tests can be achieved.

Description

Technical field: [0001] The invention relates to an optical measurement technology, in particular to a dual optical path switching cross-reference high-precision AOTF performance test method and device, which is used to realize high-precision acousto-optic tunable filter performance test. Background technique: [0002] Acousto-optic tunable filter (Acousto-optic tunable filter, AOTF) is a new type of dispersive spectroscopic device, which is based on the acousto-optic effect and can realize electrically tunable spectral filtering through radio frequency. It has excellent force and thermal characteristics; it has flexible spectral selection performance due to its electrically tunable spectral filtering; and it has the advantages of controllable spectral sampling interval and fast wavelength scanning. It is very suitable for the flexible and efficient data acquisition requirements of spectral detection. At present, this technology has been widely used in non-imaging and imagin...

AI Technical Summary

Problems solved by technology

However, the position exchange process of the two energy meters described in this method will introduce alignment position deviation, thereby affecting the test accuracy; in addition, the position exchange of the energy meter and the operation of switching ±1-order light by the Glan prism will inevitably cause Subsequent changes in the test optical path have high requirements for operation and affect the stability of the instrument

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