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1 August 2021 An objective turret using volume holographic optical element
Yeh-Wei Yu, Chih-Yuan Song, Po-Kai Hsieh, Ching-Cherng Sun, Yi Hao Huang, Tsung-Hsun Yang
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Proceedings Volume 11826, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV; 118260E (2021) https://doi.org/10.1117/12.2596440
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States
Abstract
We propose a volume holographic optical element (VHOE) used as an objective turret in a lensless digital holographic microscope. It also served as a reference wave guide to reduce the volume of the system. For further optimization of resolution performance, it used a spherical wave in the object light of the VHOE, which served as the reference light of the microscope. Another sheared spherical wave was used to illuminate the sample. The optimized VHOE increased the spatial resolution of the record signal effectively. Furthermore, the change of spherical wave distance leads to the change of imaging magnification.
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Yeh-Wei Yu, Chih-Yuan Song, Po-Kai Hsieh, Ching-Cherng Sun, Yi Hao Huang, and Tsung-Hsun Yang "An objective turret using volume holographic optical element", Proc. SPIE 11826, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV, 118260E (1 August 2021); https://doi.org/10.1117/12.2596440
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KEYWORDS
Holographic optical elements
Objectives
Digital holography
Microscopes
Spherical lenses
Holography
Image resolution
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