In-line regulator for dynamic coaxial regulation of space filter

A technology of spatial filter and debugging instrument, which is applied in the direction of instruments, lasers, phonon exciters, etc., can solve the problems of low coaxial accuracy and inability to adjust in real time, and achieve the improvement of concentric adjustment accuracy and fast coaxial adjustment Effect

Inactive Publication Date: 2002-11-13
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

Because it is adjusted offline in the static state, there is always a certain difference between the dynamic state and the static state, which results in low precision of the coaxial axis and cannot be adjusted in real time.

Method used

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  • In-line regulator for dynamic coaxial regulation of space filter
  • In-line regulator for dynamic coaxial regulation of space filter

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Embodiment Construction

[0012] Such as figure 1 structure shown. The wavelength of the main laser beam Gz output by the laser system 14 is λ=1.053 μm, wherein the compensating lens 1 is a biconvex lens made of K9 glass with a size of Ф80×8 mm. Both surfaces of the lens are coated with 1.053μm high anti-reflection coating. The 45° polarizing plate 2 is a square plate made of K9 glass, and its dimensions are 100 mm in length, 80 mm in width and 8 mm in thickness. Coat 1.053μm anti-reflection coating on both surfaces of 45° polarizing plate 2 square plate. The 45° polarizing plate 3 is also a square plate, made of K9 glass, with dimensions of 100 mm in length, 80 mm in width, and 8 mm in thickness. A 1.053 μm semi-reflective and semi-transparent film is coated on the surface of the incident main laser beam Gz on the 45° analyzing polarizer 4 square plate. When the main laser beam Gz is incident on the surface at the center of the 45° analyzing polarizer 3, 50% of the main laser energy is reflected i...

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Abstract

An in-line regulator for dynamic coaxial regulating of main laser beam from laser system and space filter is disclosed. The main laser beam emitted by laser system sequentially passes compensating lens, polarizing plate, polarization analyzer, self-collimating planar lens and space filter to full-reflector, then is reflected through space filter and self-collinating planar lens to the polarization analyzer, then it is turned by 45 deg, and finally passes through attenuator, imaging object lens, orifice light diaphragm and microscopic object lens to detector connected with display.

Description

Technical field: [0001] The invention is an online debugging instrument for dynamic coaxial adjustment of a spatial filter, which is mainly used for the dynamic coaxial online adjustment of a main laser beam and a spatial filter in a high-power laser system. Background technique: [0002] In high power laser systems, spatial filter technology has been used for nearly 30 years. The main function of the spatial filter is to spatially filter the beam between the laser amplification stages, that is, on its Fourier spectrum, use a small hole to filter out the high-frequency component in the incident beam, suppress the nonlinear growth of the high-frequency component, and prevent Self-focusing occurs; at the same time, it also has the ability to expand the beam, control the divergence of the beam, and have the ability to isolate reverse laser damage. [0003] Practice has proved that after the spatial filter technology is used in the high-power laser system, the brightness, energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/62H01S3/00
Inventor 张明科林尊琪张臻毛楚生支婷婷
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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