Comparative analysis for measurement precision of phase retrieval wavefront sensor

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• 作者：Xinxue Ma ; Jianli Wang ; Bin Wang ; Hongzhuang Li ; Yuanhao Wu ; Zongyang Wang ; Peifeng Wei
• 关键词：Phase retrieval ; Wavefront sensor ; ZYGO interferometer ; Liquid crystal space light modulator ; Zernike
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2013
• 出版时间：December, 2013
• 年：2013
• 卷：124
• 期：24
• 页码：7075-7079
• 全文大小：1732 K

文摘

In order to analyze the performance of phase retrieval wavefront sensor (PRWS), an experimental based on the PRWS method has been built. In this paper, we utilize liquid crystal space light modulator (LC-SLM) to produce single aberration and random aberration, and validate the ability of PRWS measurement for any aberrations. Mathematic model of phase retrieval measurement is constructed based on the diffraction theory, and solved using gradient based optimization algorithm. Experimental results demonstrate that good agreement is obtained among the errors distribution, PV value and RMS value of ZYGO interferometer. The measurement precision of wavefront is 3/1000 wavelength RMS. Therefore, the feasibility and accuracy of the proposed method can be confirmed.