This ultra-thin surface controls light in two completely different ways

Broadband achromatic wavefront control is a key requirement for next-generation optical technologies, including full-color imaging and multi-spectral sensing. Researchers led by Professor Yijun Feng and Professor Ke Chen at Nanjing University have now reported a major advance in this area in PhotoniX. Their work introduces a hybrid-phase cooperative dispersion-engineering approach that brings together Aharonov-Anandan (AA) and Pancharatnam-Berry (PB) geometric phases withi...