Self-adaptive optical system based on self-reference wavefront sensor and continuous surface deformable mirror

Abstract

An self adaptive optics system for based self-reference wave front sensor and continuous surface deformation lens is consisted of a wave front corrector, a Mach-Zehnder interference method-based self-reference wave front sensor and an industrial control computer. After through the wave front corrector, the beam is reflected into the Mach-Zehnder interference method-based self-reference wave front sensor. The wave front information detected by the Mach-Zehnder interference method-based self-reference wave front sensor passes the once matrix operation of the industrial control computer, then directly output the controlling voltage to the wave front corrector for closed loop. The wave front corrector using the independent unit continuous interference deformation lens has a quicker respond speed. The wave front detector using the interference principle has upper spatial resolution and detecting precision. Thereby, the wave front correction performance of the interference wave front detector-based self adaptive optics system is largely improved, the application domain of the self adaptive optics system is enlarged, and the advantages are obviously.

Description

technical field [0001] The invention relates to an adaptive optics system, in particular to a continuous surface deformable mirror adaptive optics correction system based on a self-reference wavefront sensor. Background technique [0002] At present, in the adaptive optics system, the Hartmann wavefront sensor is widely used, and when the incident wavefront aperture increases, the detection needs to increase the number of sub-apertures of the Shack-Hartmann wavefront sensor, and each sub-aperture corresponds to A certain number of CCD pixels requires more pixels on the CCD target surface, which puts higher requirements on the CCD camera. In an adaptive optics system based on a self-referencing wavefront sensor, each pixel on the CCD target surface can be regarded as a sub-aperture, so that each pixel can directly correspond to a part of the wavefront. When the incident wavefront aperture increases, the Compared with the Shack-Hartmann wavefront sensor, it can effectively re...

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Problems solved by technology

In the article "High Order, Reconstructor-Free Adaptive Optics for 6-8meter class Telescopes" Maud Langlois, Roger Angel, Michael Lloyd-Hart, Venice 2001 Beyond Conventional Adaptive Optics used a liquid crystal spatial modulator as a wavefront corrector, but the liquid crystal spatial The modulator itself has the disadvantages of low utilization rate of light energy, serious dispersion, slow response speed, etc., which seriously affects the application of this adaptive optical system in atmospheric disturbances.

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