Tsai, Chen MingChen MingTsaiYUAN LUO2024-01-092024-01-092023-01-0197815106634350277786Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/638297Digital 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.Digital holographic microscopy | quantitative phase imaging | volume hologramconference paper10.1117/12.30079272-s2.0-85176103198https://api.elsevier.com/content/abstract/scopus_id/85176103198