Dual wavelength digital holographic imaging of layered structures

OPTICS COMMUNICATIONS

卷:458

Article

Khoo, Ting Chean¹  Sharikova, Anna¹  Khmaladze, Alexander¹ 

[1] SUNY Albany, Phys Dept, 1400 Washington Ave, Albany, NY 12222 USA

关键词: Digital holography;    Microscopy;    Phase imaging;    Phase reconstruction;   

DOI  :  10.1016/j.optcom.2019.124793

来源: Elsevier

【 摘 要 】

We present a dual wavelength digital holographic technique for three-dimensional microscopic imaging of layered structures, where layers are separated from one another by the axial distances exceeding the wavelength of imaging light. Our methodology not only provides the three-dimensional structure of each layer, but also allows the height differentiation of distinct layers. We have also implemented a technique suppressing low intensity signal when no reliable phase information can be extracted, based on the quality of the interference fringe pattern. We utilize a dual wavelength setup, where the combination of two overlapping interferometers enables simultaneous acquisition of two phase profiles. We demonstrate that this imaging modality is particularly well-suited for imaging of multilayered electrode structures embedded in glass.

【 授权许可】

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