This seminar will be followed by the 2013 Gabor lecture, given by Professor Laszlo Solymar, University of Oxford.
Speakers
Dennis Gabor – Life, Achievements and Personality
Emeritus Professor Peter C J Hill, Cranfield Defence & Security, Shrivenham (Gabor student and friend)
Dennis Gabor, is best known as the father of holography. He also did outstanding research in communication theory, applied electronics, and signal processing. The talk will describe his early life, research career and inventions emphasising significant engineering applications.
Dennis Gabor invented holography in 1948. What is holography? How is it used?
Emeritus Professor Robin Smith, Imperial College London
Holography allows the storage of propagating optical wavefronts for later reconstruction. Here holography is described in terms of coherence and diffraction of light with examples from display holography, security holograms, engineering applications of holographic interferometry and diffractive optical lens elements.
Gabor’s time-frequency signal expansion
Professor Martin J. Bastiaans, Eindhoven University of Technology
Gabor’s signal expansion expresses a signal as a combination of shifted and modulated versions of a given synthesis window. How to derive an analysis window is then shown that is bi-orthogonal to the set of synthesis windows and with which the expansion coefficients can be determined. Gabor restricted himself to the critical case for which the time-frequency lattice satisfies Heisenberg’s uncertainty relation, we allow a denser lattice.
Light, Lasers and the internet
Professor Sir David N Payne, University of Southampton
Capacity demand continues to grow at a startling rate, doubling every two years, while the internet is estimated as burning 4% of world energy usage. The solution to both of these unexpected consequences of success is more optics, reaching further into the network to overcome the existing bottlenecks and employing next-generation optical components