Digital Hologram Construction and Reconstruction in Fresnel Holography for Computational Holography

Digital hologram construction and reconstruction in Fresnel holography for computational holography is an essential technology for understanding three-dimensional object morphology. This technique builds upon holography principles—a method for recording and reconstructing light fields—where object holograms are captured on photosensitive materials and reproduced using laser beams. The digital construction process is critical as it enables precise hologram recording through computational algorithms, thereby enhancing reconstruction quality. Key implementation steps involve wave propagation modeling using Fresnel diffraction integrals, typically calculated through Fourier transform operations in software like MATLAB or Python. Fresnel holography offers promising advantages over traditional approaches by mitigating issues like aberrations and blurring through numerical refocusing techniques. Research and development in this field provide significant opportunities to advance holographic applications, with potential implementations including phase retrieval algorithms and GPU-accelerated reconstruction pipelines for real-time processing.