2019 Topical Meeting on Optical Interference Coatings: introduction.

This feature issue of Applied Optics is dedicated to the fourteenth Topical Meeting on Optical Interference Coatings held 2-7 June 2019, in Santa Ana Pueblo, New Mexico, USA. The conference, taking place every three years, is a focal point for global technical interchange in the field of optical interference coatings and provides premier opportunities for people working in the field to present their new advances in research and development. Papers presented at the meeting covered a broad range of topics ranging from fundamental research on coating design theory, new materials, and deposition and characterization technologies, to the vast and growing number of applications in electronic displays, communication, optical instruments, consumer electronics, high power and ultra-fast lasers, solar cells, space missions, gravitational wave detection, and many others.