Fabrication and Characterization of Thermally Evaporated Omnidirectional Mirrors

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 omnidirect...

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Bibliographic Details
Published in:IEEE photonics technology letters 2007-11, Vol.19 (22), p.1810-1812
Main Authors: Zenou, M., Bruner, A., Goldin, S.Y., Klebanov, M., Lyubin, V., Sfez, B.
Format: Article
Language:English
Subjects:
Chalcogenides
Cryolite
Dielectric mirror
Evaporation
Fabrication
integrated optics
Mirrors
multilayer coating
Multilayers
Nonhomogeneous media
omnidirectional reflector
Optical films
optical properties
Optical refraction
Optical variables control
Periodic structures
Photonic band gap
photonic crystal
Photonic crystals
Reflectivity
Signatures
Surface roughness
thin film
Visual
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Summary: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.907605