Innovations in Optical Scanning Holography Seminar
On 27 November 2025, the Electrical Engineering Division welcomed Prof. Ting-Chung Poon (Virginia Tech, USA) for a seminar on Principles and Practice of Optical Scanning Holography. The visit was kindly initiated and coordinated by Prof. Daping Chu, who invited Prof. Poon to share his expertise with our community. The event attracted students and researchers interested in cutting-edge 3D imaging and digital holography.
Prof. Poon began by outlining the fundamentals of digital holography and explaining how Fresnel zone plates (FZPs) enable effective wavefront reconstruction. He then introduced Optical Scanning Holography (OSH), a single-pixel, real-time holographic technique known for its efficient hardware requirements and strong 3D imaging performance.
The seminar concluded with a look at current and emerging OSH applications, including 3D holographic television, fluorescence and phase-contrast microscopy, and the digital recording of cultural heritage such as paintings and murals.
The work presented included contributions from Prof. Yaping Zhang (Kunming University of Science and Technology), currently a Visiting Academic at Cambridge Digital Humanities (CDH), whose research focuses on digital holography and its applications in the preservation and visualization of cultural heritage, including paintings and murals.
We are grateful to Prof. Poon and Prof. Zhang for an engaging and insightful visit, and to Prof. Chu for facilitating this valuable seminar.
