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Dual-optical path switching cross-reference high-precision aotf performance test method and device

A test device and cross-reference technology, applied in the field of optical measurement, can solve problems affecting instrument stability, test accuracy, alignment position deviation, etc., and achieve the effects of fast switching test, compact test optical path, and elimination of test errors

Active Publication Date: 2017-09-26
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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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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  • Dual-optical path switching cross-reference high-precision aotf performance test method and device

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Embodiment Construction

[0048] as follows is based on Figure 6 A preferred embodiment of the present invention is given to illustrate the structural features and implementation methods of the present invention, but not to limit the scope of the present invention.

[0049] The dual optical path switching cross-reference high-precision AOTF performance test device includes the following parts:

[0050] (1) Wavelength tunable laser 1: In this implementation method, EKSPLA NT342 / 1 / UV wavelength tunable laser is selected as the light source. This laser can generate 210nm-2300nm continuous tunable laser beam with an output power of 50mW.

[0051] (2) Neutral density filter 2: Spiricon neutral density filter is selected in this embodiment.

[0052] (3) Aperture diaphragm 3: Daheng Optoelectronics GCM-57 variable diaphragm is selected for this implementation.

[0053] (4) Glan prism 4: Thorlabs' GL15Glan-Laser CalcitePolarizers are used in this embodiment, the extinction ratio is better than 10000:1, and ...

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Abstract

The invention discloses a dual optical path switching cross-reference high-precision AOTF performance testing method and device. This test method uses the optical path switching component to realize the stable switching of ±1 level of the detection optical path, and uses the detector rotation device to realize the stable alternating test of the optical path, effectively eliminating the influence of factors such as the instability of light energy and the inconsistent response of the energy meter probe on the test results. . The invention has the characteristics of compact test optical path, concise and easy-to-operate test steps, clear data processing method and flow, etc., and can realize high-efficiency test while improving test accuracy and system stability.

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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 何志平秦侠格舒嵘王建宇杨秋杰吴钰白蕊霞刘经纬
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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