Adjustment device for eliminating offset error of tiled grating

A technology for adjusting devices and gratings, which is applied in optics, optical components, instruments, etc., can solve the problems that there is no parallel monitoring of the grating surface, it is difficult to realize, and the cost is expensive, and achieves the effect of large error capture range, low cost, and simple structure
CN100422791CInactive Publication Date: 2008-10-01LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Publication Date
2008-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a adjusting device for eliminating the joining grating error. The adjusting device comprises the laser wave zone monitoring section and the grating location adjusting section, with the monitoring light divided into transmission beam and reflective beam after light splitter, with the transmission light vertically incidence to the jointing grating after three time reflection by plane reflective mirror, returning to the light splitting mirror along the original path, focused through lenses, amplified through microscope, imaging on ccd, reflective light after light splitter reflected through two times of plane reflection, a small hole plate, lens focusing, microscope amplification and imaging on the other ccd. It changes the angle of the detecting light based on the incidence angle relationship formula, eliminating the error location of the jointing grating, with simple structure, low cost, with error eliminated to the precision scope.
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Description

technical field

[0001] The invention belongs to a short-pulse laser pulse compression device, in particular to an adjustment device for eliminating misalignment errors of spliced ​​gratings. Background technique

[0002] In short-pulse compression cell systems using stitched gratings, micron-scale misalignment errors between the stitched grating faces can cause focal spot splitting. Even if the method of pairing error compensation is used to compensate for the misalignment error by adjusting the width of the grating slit, it will affect the far-field time-domain characteristics of the compressed pulse, so it is necessary to fundamentally eliminate the misalignment error. In 2006, Professor Zeng Lijiang of Tsinghua University published an article "Method to mosaic gratings by using a two-color heterodyne interferometer containing a reference grating" on Optics Letter, proposing to use two-wavelength heterodyne interferometry to eliminate misalignment errors, but This method ...

Claims

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