Volume hologram for common-path digital holographic microscopy
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
12608
ISBN
9781510663435
Date Issued
2023-01-01
Author(s)
Tsai, Chen Ming
Abstract
Digital holography microscopy (DHM) is a quantitative phase imaging technique that is useful to observe transparent samples. The diffraction grating is most widely employed in the common-path DHM (CP-DHM) to allow the object beams and reference beams to be separated at a small angle and propagate almost along the same optical path. However, the conventional thin grating's intrinsic multiple diffraction orders cause CP-DHM to suffer a significant power loss. To address this issue, we propose a volume holographic-based CP-DHM that utilizes the single diffraction order characteristics of volume grating. The two beams in CP-DHM can be generated by volume holograms with low power loss and ease. Our method is advantageous as compared to the other closely related methods, and it is expected to increase the applications of common-path DHM systems.
Subjects
Digital holographic microscopy | quantitative phase imaging | volume hologram
Type
conference paper