A holographic zoom system without undesirable light

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• 作者：Di Wang^a ; Chao Liu^a ; Chuan Shen^b ; Xin Zhou^a ; Qiong-Hua Wang^a ; ^{qhwang@scu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Spatial light modulator ; Liquid lens ; Zoom system
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：127
• 期：19
• 页码：7782-7787
• 全文大小：997 K

文摘

In this paper, we propose a holographic zoom system without the undesirable light caused by zero-order diffraction beam and high-order reconstructed images. By loading a divergent spherical wave, the focus planes of the reconstructed image and the zero-order diffraction beam induced by the liquid crystal on silicon (LCoS) can be separated. By controlling the focal lengths of the liquid lens used in the system and the encoded divergent spherical wave on the LCoS, we can change the magnification of the reconstructed image very quickly, while the system does not have undesirable light and the output plane of the system keeps stationary.