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首页> 外文期刊>Optics Letters >Adaptive wave-front correction by means of all-optical feedback interferometry
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Adaptive wave-front correction by means of all-optical feedback interferometry

机译：全光反馈干涉法的自适应波前校正

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摘要

A novel adaptive wave-front correction system based on an all-optical feedback interferometer is described. In this system the two-dimensional output fringe intensity from a Mach-Zehnder interferometer with large radial shear is optically fed back to an optically addressed phase-only liquid-crystal spatial light modulator. Consequently, without a separate aberration-free reference wave, the modulator phase approximates the conjugate of the interferometer phase that is directly related to the phase of the input aberrated wave front, so this system is applicable in adaptive optics. We successfully achieved real-time correction of aberrated wave fronts: A diffraction pattern that was seriously distorted because of aberrations was transformed into a diffraction-limited spot immediately after the feedback loop was closed.
机译：描述了一种基于全光反馈干涉仪的新型自适应波前校正系统。在该系统中，来自Mach-Zehnder干涉仪的具有较大径向剪切力的二维输出条纹强度被光学反馈到仅光学寻址的液晶空间光调制器。因此，在没有单独的无像差参考波的情况下，调制器相位近似与直接与输入像差波前的相位相关的干涉仪相位的共轭，因此该系统适用于自适应光学。我们成功地实现了像差波阵面的实时校正：由于像差而严重扭曲的衍射图样在反馈环路关闭后立即转变为衍射极限点。

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