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Quantitative polarization digital holographic microscope
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DOI：10.1088/2515-7647/ae58de.png)
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Abstract
En 中文
Quantitative polarization digital holographic microscope (QPDHM) emerges as a powerful technique offering unprecedented capabilities in imaging and extraction of rich optical parameters, such as phase retardation, birefringence, and orientation of anisotropic structures, which are crucial for understanding biological processes and material properties at the microscale. In this work, a new configuration of single-shot common-path QPDHM with a very high temporal stability (of similar to 0.0096 rad.) is proposed and experimentally demonstrated. The system involves polarization-angular multiplexing digital holographic method in which only a single multiplexed hologram is recorded, which provides the complex amplitudes of the object under study corresponding to the orthogonal polarization components. The full polarization state of the object light field, i.e. the Stokes parameters, is quantitatively measured from the obtained complex amplitude information. The system does not require mechanical movement of any optical components or complicated devices such as phase-shifting or polarization camera. This advantage of the proposed system makes it a suitable candidate for the visualization and analysis of dynamic and fast transient polarization state measurements. The imaging performance and measurement accuracy of the proposed system are verified on several anisotropic materials, and the obtained results corroborate its relevance.
Keywords:
single-shot
common-path
polarization imaging
digital holography
stokes parameters