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Dual-arm sweeping interferometer system

An interferometer and dual-arm technology, which is applied in the field of dual-arm sweep-pendulum interferometer systems, can solve problems such as lateral displacement, and achieve the effects of easy calibration, easy implementation, and reduced complexity

Active Publication Date: 2017-08-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, although it can ensure the parallelism of the outgoing beam and the incident beam, since the outgoing beam does not return along the original path, it will introduce lateral displacement, so that accurate initial calibration is required during use.

Method used

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  • Dual-arm sweeping interferometer system

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Such as Figure 1-5 As shown, as a preferred embodiment of the present invention, the base 40 is provided with a rotating platform 20, the rotating platform 20 is driven to rotate by a drive unit, and the first and second mirrors 21, 22 are installed on the rotating platform 20 and are placed on both sides of the rotating platform 20. In this embodiment, the two mirrors rotate around the same shaft, which can easily control the synchronous action of the two mirrors, greatly simplifying the transmission structure.

[0014] Further, when the rotating platform 20 swings to the middle position, the beam splitter 10 is located on the symmetrical plane between the first and second reflecting mirrors 21 and 22 . The rotation center of the rotating platform 20 is located on the symmetrical plane between the first and second reflecting mirrors 21 and 22 . The device structure of the invention has symmetry, which makes the system stable and reliable, and insensitive to temperat...

Embodiment 2

[0023] The first and second reflectors 21, 22 are rotationally connected to the base 40 through a rotating shaft 25, 26 respectively, and the rotation angle and direction of the two mirrors are synchronized. Compared with embodiment 1, this embodiment is only different in the way of rotation of the first and second mirrors, and other structures are basically the same as embodiment 1.

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Abstract

The invention belongs to optical components of optical detection equipment, and in particular relates to a double-arm sweeping interferometer system, which includes a beam splitter mirror arranged on a base, a reflection channel composed of a first reflector and a second reflector, and one end of the reflector channel A first retroreflector perpendicular to the transmitted light beam and a second retroreflector perpendicular to the reflected beam are provided. The first and second reflectors are oscillating relative to the base, and the first and second reflectors are oscillating The mirrors are kept parallel throughout the process, and the axis of rotation is perpendicular to the plane of the transmitted and reflected beams. The present invention is characterized in that, firstly, it uses a flat mirror to realize the return of the original path of the light beam, which is not sensitive to inclination and is convenient for equipment calibration; secondly, it converts the linear motion of the moving mirror into the sweeping motion of the platform, which is relatively , the sweep motion can reduce the complexity of moving mirror drive and is easy to implement.

Description

technical field [0001] The invention belongs to optical components of optical detection equipment, and in particular relates to a double-arm sweeping interferometer system. Background technique [0002] The interferometer is the core part of the Fourier transform spectrometer (FTS), which determines the main performance indicators of the spectrometer, but the classic Michelson interferometer structure has very strict requirements on the precision of the optical system, the alignment of the mirror and the scanning drive system, so it is commonly used All interferometer systems have improved on this. [0003] In order to reduce the impact of the tilting of the moving mirror in the classic Michelson interferometer structure and reduce the requirements on the alignment of the mirror and the driving performance of the moving mirror, it is necessary to compensate the tilt of the interferometer. The tilt compensation structures used in the optical-mechanical structure of the inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/45G01J3/02
Inventor 李胜李相贤高闽光王亚萍陈军张玉钧徐亮金岭童晶晶石建国李妍刘文清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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