December 2018: Professor Nagarajan Valanoor & Dr Daniel Sando "Epitaxial ferroelectric oxide thin films for optical applications"

December 2018: Professor Nagarajan Valanoor & Dr Daniel Sando "Epitaxial ferroelectric oxide thin films for optical applications"

"Reinvigorating the field of thin film ferroelectric optics"

Ferroelectric oxides are widely used in telecommunications, for instance in electro-optic modulators, which convert electrical signals to optical signals. Usually such applications use bulk single crystals of dimensions of several centimetres. Recently there has been a drive to implement optical functionalities in nanoscale thin-film based devices, where energy and speed savings can be envisaged. Another exciting avenue for ferroelectric thin film materials is in solar energy harvesting. This review describes the research on using ferroelectric materials in thin film form for next generation optical devices.

Read the full paper, as published in Applied Physics Reviews (Volume 5, Issue 4, 1 December 2018, Article number 041108).