Title :
Fabrication and Characterization of Thermally Evaporated Omnidirectional Mirrors
Author :
Zenou, Michael ; Bruner, Ariel ; Goldin, Shlomo Y. ; Klebanov, Matvei ; Lyubin, Victor ; Sfez, Bruno
Author_Institution :
Soreq NRC, Yavne
Abstract :
Omnidirectional mirrors based on chalcogenide and cryolite were fabricated by thermal evaporation. These mirrors are characterized using a two-dimensional mapping that provides a direct, visual signature. These signatures are presented for different multilayer structures. A mirror with an omnidirectional reflectivity of more than 94% and with a transverse electric omnidirectional reflectivity of more than 99.99% for high-incident angles is demonstrated. A surface roughness of less than 5 nm was obtained.
Keywords :
integrated optics; mirrors; optical fabrication; optical multilayers; reflectivity; surface roughness; chalcogenide; cryolite; multilayer; omnidirectional mirrors; omnidirectional reflectivity; surface roughness; thermal evaporation; transverse electric reflectivity; visual signature; Fabrication; Mirrors; Nonhomogeneous media; Optical films; Optical refraction; Optical variables control; Periodic structures; Photonic band gap; Photonic crystals; Reflectivity; Dielectric mirror; integrated optics; multilayer coating; omnidirectional reflector; optical properties; photonic crystal; thin film;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.907605
