期刊
FRONTIERS IN PHYSICS
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2021.667023
关键词
quantitative phase imaging; digital holographic microscopy; stain-free cell imaging; synthetic phase imaging; stain-free flow cytometry
资金
- Tel Aviv University's Light-Matter Interactions Center
This study presents a new imaging platform for stain-free quantitative imaging of biological cells, successfully addressing phase ambiguities. The method not only allows for rapid data acquisition, but also is suitable for observing dynamic processes.
We present an imaging platform for stain-free quantitative imaging of biological cells using a simultaneous dual-wavelength holographic module. We use this module to experimentally solve the problem of 2 pi phase ambiguities that occurs in spatial locations where the optical thickness of the sample is larger than the wavelength. Thus, the process does not require using digital phase unwrapping that is computational heavy and impairs real-time processing. The proposed method is not limited to sequential acquisition of two quantitative phase maps in different times, but rather allows optical multiplexing of two off-axis holograms on the camera at once, enabling acquisition of fast dynamic processes. The module is simple and portable, making it attractive for clinical use. We demonstrate using the module for quantitative phase imaging of cancer and sperm cells.
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