Abstract

Quantitative phase microscope (QPM) is used for the quantitative information and dynamic phase imaging of biological specimen, which provides wide application in biomedical sciences. High temporal phase stability of the QPM system is the primary requirement for accurate phase measurement. We have developed a common-path QPM geometry based on beam displacer and pinhole unit to achieve high temporal stability. The convenient adjustment of reference and object beams makes optical system compact and low-cost. The membrane fluctuations and qualitative phase are measured to demonstrate the capability and applicability of the system.

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