研究目的
Investigating the capability of Space-Time Digital Holography (STDH) to improve spatial resolution through a new recording and processing modality, enabling superresolution imaging with a single object scan.
研究成果
The study demonstrates that STDH can significantly improve imaging resolution through the self-assembly of object frequencies, with the potential for application in Lab-on-a-Chip devices for high-resolution imaging.
研究不足
The technique requires precise matching of the scanning velocity to the frame rate of the sensor, which may limit its application in systems where such control is not feasible.
1：Experimental Design and Method Selection:
The study employs a novel recording modality, STDH, which maps hologram signatures in a hybrid space-time domain by exploiting object motion.
2：Sample Selection and Data Sources:
Onion epidermal cells and a USAF-1951 resolution target were used as samples.
3：List of Experimental Equipment and Materials:
The setup includes an off-axis Mach-Zehnder interferometer with a
4：8nm coherent light source, a 2D linear stage for scanning, two 25× objective lenses, and a scientific-grade CCD camera. Experimental Procedures and Operational Workflow:
5 The object is scanned in 1D or oblique directions while recording holograms, which are then processed to construct space-time holograms.
5：Data Analysis Methods:
The constructed holograms are analyzed using numerical refocusing and phase shifting techniques to improve resolution.
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