In this paper we present oblique illumination lateral shearing digital holographic microscopy (OILS-DHM) to remove the overlapping information of one of the two wave-fronts forming the holograms and enhance the lateral resolution. Lateral shearing DHM as a self-referencing scheme makes use of the interference of the object beam with itself to form the hologram, and thus is a compact and simple technique and is immune to environmental vibrations. Nonetheless, like all self-referencing techniques it suffers from restrictions on the sample and the field of view. We show that by applying oblique illumination in lateral shearing DHM, it is possible to remove the overlapping information of one of the interfering wave-fronts and thus lift the restriction on the sample. Furthermore, due to the intrinsic characteristic of oblique illumination the lateral resolution of the holographic imaging system is enhanced. The technique is validated through conducting experiments on 1D and 2D static...

中文翻译：

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斜照明横向剪切数字全息显微镜

在本文中，我们提出了倾斜照明横向剪切数字全息显微镜（OILS-DHM），以消除形成全息图的两个波前之一的重叠信息，并提高横向分辨率。横向剪切DHM作为一种自参考方案，利用了物光束自身的干涉来形成全息图，因此是一种紧凑而简单的技术，并且不受环境振动的影响。但是，像所有自参考技术一样，它在样品和视野方面也受到限制。我们表明，通过在横向剪切DHM中应用倾斜照明，可以消除干扰波阵面之一的重叠信息，从而解除对样品的限制。此外，由于倾斜照明的内在特性，全息成像系统的横向分辨率得以提高。通过对一维和二维静态实验进行验证，验证了该技术。