A variable compensation interference detection system and method for a large gradient phase strong light element

Abstract

The invention discloses a variable compensation interference detection system and method for a large gradient phase type strong light element. The control system, translation stage, and beam expander system are used to match the aperture of the SLM and the aperture of the wavefront interferometer. The control end of the SLM is connected to the SLM phase control system. The SLM phase control system is used to control the SLM to produce variable aberration compensation, compensation The large gradient wavefront aberration of the ultra-wavefront interferometer range of the large-gradient phase-type high-light element to be tested, the translation stage is used to control and compensate the lateral translation of the large-gradient phase-type high-light element to be measured, so that the wavefront interferometer measures the phase elements one by one of each sub-aperture. The invention combines the SLM variable aberration compensation technology and the sub-aperture splicing technology, and has the advantage of improving the adaptability of the interferometer to the wave front gradient of the phase type strong light element.

Description

technical field [0001] The invention relates to the field of adaptive optics and the field of optical precision measurement, in particular to a variable compensation interference detection system and method of a large gradient phase type strong light element. Background technique [0002] Inertial Confinement Fusion (ICF) uses strong laser light to directly irradiate hydrogen atoms to fuse them and generate huge energy. During the "ignition" process of the ICF, when the laser beam passes through the small holes on both sides of the cavity target, the plasma generated by the interaction between the side lobes of the focal spot and the edge of the target hole will expand to the center of the target hole at a high speed, preventing the subsequent laser from entering the target cavity and causing the plasma The body blocks the mouth, which leads to the failure of the physical experiment. In addition, in order to achieve a uniform implosion within a 4π solid angle of space, and ...

AI Technical Summary

Problems solved by technology

However, in order to meet the requirements of laser targeting focus spot size, shape, and laser irradiation uniformity, it is necessary to further improve the design wavefront gradient of the phase-type high-light element. Measuring the design and processing of large gradient phase type strong light components, which in turn affects the development of Shenguang series strong laser devices

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