Photonic band gap materials: semiconductors of light - Sajeev John April 30th 2015
The 20th century has been the Age of Artificial Materials. The electronics revolution of the 20th century has been made possible through the ability of semiconductors to microscopically manipulate the flow electrons. Along this line of technological progress, many scientists around the world have suggested that the 21st century will be the Age of Photonics, in which artificial materials are synthesized to microscopically mould the flow of light on a micro-chip. PBG materials are light-trapping crystals that provide a versatile new platform for this to take place. This has applications for optical communications, information technology, solar energy harvesting, and medical diagnostics to name a few. They also offer a new frontier in fundamental science where unprecedented forms strong light-matter coupling are enabled with effects predicted such as above-room-temperature equilibrium Bose-Einstein condensation.
Dr. John is a pioneering theoretician in photonic band gap (PBG) materials. He is a Professor of Physics at the University of Toronto and is Canada Research Chair in Optical Sciences (2000-present).
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