Dual-Mode Telecentric-Based Digital Holographic Microscope
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  • Release Date: 2022-05-25
  • common-path interferometry
  • digital holographic microscopy
  • Fresnel biprism
Video Introduction

This video is adapted from 10.3390/s22103793

Common path DHM systems are the most robust DHM systems as they are based on self-interference and are thus less prone to external fluctuations. A common issue amongst these DHM systems is that the two replicas of the sample’s information overlay due to self-interference, making them only suitable for imaging sparse samples. This overlay has restricted the use of common-path DHM systems in material science. The overlay can be overcome by limiting the sample’s field of view to occupy only half of the imaging field of view or by using an optical spatial filter. In this video, researchers have implemented optical spatial filtering in a common-path DHM system using a Fresnel biprism. Researchers have analyzed the optimal pinhole size by evaluating the frequency content of the reconstructed phase images of a star target. Researchers have also measured the accuracy of the system and the sensitivity to noise for different pinhole sizes. Finally, researchers have proposed the first dual-mode common-path DHM system using a Fresnel biprism. The performance of the dual-model DHM system has been evaluated experimentally using transmissive and reflective microscopic samples.

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Doblas, A. Dual-Mode Telecentric-Based Digital Holographic Microscope. Encyclopedia. Available online: https://encyclopedia.pub/video/video_detail/317 (accessed on 15 April 2024).
Doblas A. Dual-Mode Telecentric-Based Digital Holographic Microscope. Encyclopedia. Available at: https://encyclopedia.pub/video/video_detail/317. Accessed April 15, 2024.
Doblas, Ana. "Dual-Mode Telecentric-Based Digital Holographic Microscope" Encyclopedia, https://encyclopedia.pub/video/video_detail/317 (accessed April 15, 2024).
Doblas, A. (2022, May 25). Dual-Mode Telecentric-Based Digital Holographic Microscope. In Encyclopedia. https://encyclopedia.pub/video/video_detail/317
Doblas, Ana. "Dual-Mode Telecentric-Based Digital Holographic Microscope." Encyclopedia. Web. 25 May, 2022.