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A kind of gluing method of solid sagnac interferometer

An interferometer and entity technology, applied in the directions of instruments, installation, optics, etc., can solve the problems of lowering the modulation degree of the interferometer, complicated assembly and adjustment in the gluing process, and secondary repair of the interferometer components, so as to eliminate the gluing stress and simplify the assembly and adjustment. , the effect of reducing the glue stress

Active Publication Date: 2021-05-18
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0008] In order to solve the existing solid sagnac interferometer gluing method, when the large gluing stress in the gluing process causes the deformation of the interferometer reflective surface, it is impossible to perform secondary repairs on the interferometer components, resulting in a decrease in the modulation degree of the interferometer, and the gluing process. To solve complicated technical problems, the present invention proposes a method for gluing solid sagnac interferometers

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  • A kind of gluing method of solid sagnac interferometer
  • A kind of gluing method of solid sagnac interferometer
  • A kind of gluing method of solid sagnac interferometer

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Embodiment Construction

[0043] The gluing method of entity sagnac interferometer provided by the present invention comprises the following steps (with reference to Figure 2-3 ):

[0044] Step 1: Plating spectroscopic coating and anti-reflection coating

[0045] Before gluing, for the half pentagonal prism one 13 of constituting interferometer and half pentagonal prism two 14 on the transmissive surface 16 of anti-reflection coating, on reflective surface 17, do not plate reflective film earlier temporarily, on half pentagonal prism one 13 Or on the beam-splitting surface 18 of the half-pentagonal prism 2 14, a beam-splitting film is plated.

[0046] Step 2: Establish the main plane for installation and adjustment

[0047] 2.1) Use an electronic level to level the glued base 3, and the leveling accuracy depends on the accuracy required for the glued interferometer;

[0048] 2.2) Adjust the first theodolite 7 and the second theodolite 8 to the level, and calibrate the 90° included angle of the glue...

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Abstract

In order to solve the existing solid sagnac interferometer gluing method, when the large gluing stress in the gluing process causes the deformation of the interferometer reflective surface, the interferometer components cannot be repaired twice, resulting in a decrease in the modulation degree of the interferometer and the adjustment of the gluing process. Complicated technical problems, the present invention proposes a gluing method for a solid sagnac interferometer, by adjusting the coating order of the working surface of the interferometer, and finally cold-coating the internal reflection film, the influence of the gluing process on the internal reflection film can be removed; After curing, the shear amount and orthogonality can be adjusted after the first curing; maintaining a temperature of about 40°C during the second coating can anneal the interferometer prism and eliminate part of the bonding stress; by strictly monitoring the reflection during the bonding process Surface verticality, reduce the rotation and inclination of the two half-pentagonal prisms forming the interferometer, minimize the gluing stress caused by the gluing process, and realize the stress-relief installation and adjustment of the solid sagnac interferometer.

Description

technical field [0001] The invention relates to a gluing method of a solid sagnac interferometer. Background technique [0002] High-throughput static Fourier transform imaging spectroscopy technology is currently a research hotspot in the world. One of the implementation methods of this type of imaging spectrometer is to place a transverse shearing interferometer in the parallel optical path to achieve isoclinic interference imaging. This type of interference imaging The realization method has the technical characteristics that it is not restricted by the relative aperture of the optical system and the interference field and the imaging plane are always coplanar, so it can realize the interference spectrum detection with large relative aperture and high sensitivity. The transverse shear interferometer is its core component, and the typical representatives are sagnac interferometer, Michelson interferometer and improved Mach-Zehnder interferometer based on recirculating loop...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/62G02B7/18G02B1/10
CPCG02B27/62G02B7/1805G02B1/10
Inventor 李思远刘欢赵强李立波白清兰邹纯博武俊强
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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