Single-shot in-line Fresnel incoherent holography using a dual-focus checkerboard lens
Single-shot in-line Fresnel incoherent holography using a dual-focus checkerboard lens
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DOI：
10.1364/ao.393176
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发表时间：
2020-08-01
期刊：
影响因子：
1.9
通讯作者：
Nomura, Takanori
中科院分区：
文献类型：
--
作者：
Sakamaki, Shota;Yoneda, Naru;Nomura, Takanori
菲涅耳非相干相关全息术（FINCH）是一种利用同轴光学系统获取荧光等非相干物体三维信息的技术。然而，它是困难的FINCH应用到动态现象，因为FINCH必须检测相移全息图顺序消除孪生和零级图像。本文提出了一种利用纯相位空间光调制器实现的优化模拟衍射光学元件（sDOE），在同轴装置上同时获得相移全息图的方法。优化的sDOE是一种具有双焦点透镜、2D光栅和空间移相器的光学器件。因此，sDOE被称为双焦点棋盘透镜。光学实验验证了该方法的可行性。(C)2020美国光学学会
Fresnel incoherent correlation holography (FINCH) is a technology that can acquire three-dimensional information of incoherent objects such as fluorescence with an in-line optical system. However, it is difficult to apply FINCH to dynamic phenomena, since FINCH has to detect phase-shifted holograms sequentially to eliminate twin and zero-order images. In this paper, a method in which the phase-shifted holograms can be obtained simultaneously with an in-line setup by using an optimized simulated diffraction optical element (sDOE), realized by a phase-only spatial light modulator, is proposed. The optimized sDOE is an optical device with a dual-focus lens, 2D grating, and spatial phase shifter. Therefore, the sDOE is called a dual-focus checkerboard lens. The optical experiment confirms the feasibility of the proposed method. (C) 2020 Optical Society of America