Birefringent Omnidirectional Reflector
Applied Optics, Vol. 43, Issue 7, pp. 1570-1576 (2004)
http://dx.doi.org/10.1364/AO.43.001570
Acrobat PDF (340 KB)
Abstract
Anisotropic optical coatings offer unique polarizing properties, unmatched by conventional isotropic devices. Here we demonstrate the fabrication of a birefringent omnidirectional reflector, a type of photonic crystal, which exhibits complete reflection of radiation at 1.1 μm for all incidence angles and polarizations. The thin-film device was deposited from electron-beam evaporated silicon, with refractive-index variation arising from atomic-scale porosity created with glancing-angle deposition. Birefringence was found to enhance the performance of the device compared with its isotropic counterpart by enlarging the photonic bandgap region of omnidirectional reflection.
© 2004 Optical Society of America
OCIS Codes
(160.4670) Materials : Optical materials
(230.1480) Optical devices : Bragg reflectors
(230.4170) Optical devices : Multilayers
(310.1860) Thin films : Deposition and fabrication
(310.6860) Thin films : Thin films, optical properties
Citation
Kate Kaminska and Kevin Robbie, "Birefringent Omnidirectional Reflector," Appl. Opt. 43, 1570-1576 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-7-1570
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