Omnidirectional mirror based on Bragg stacks with a periodic gain-loss modulation

In this work we demonstrate that a Bragg Stack with a periodic gain-loss modulation can function as an Omnidirectional Mirror (OM) with complete reflection at any angle of incidence irrespective of the light polarization. The Bragg Stack is composed by the periodic variation of two layers with the s...

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Bibliographic Details
Published in:AIP advances 2014-01, Vol.4 (1), p.017136-017136-8
Main Authors: Manzanares-Martinez, Jesus, Ham-Rodriguez, Carlos Ivan, Moctezuma-Enriquez, Damian, Manzanares-Martinez, Betsabe
Format: Article
Language:English
Subjects:
Angle of reflection
BRAGG REFLECTION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Energy gap
Gain-Loss
INCIDENCE ANGLE
LAYERS
MODULATION
Periodic variations
PERIODICITY
Refractivity
Wave propagation
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Summary:In this work we demonstrate that a Bragg Stack with a periodic gain-loss modulation can function as an Omnidirectional Mirror (OM) with complete reflection at any angle of incidence irrespective of the light polarization. The Bragg Stack is composed by the periodic variation of two layers with the same value of the real part of the refractive index (n r ) and a periodic modulation in the imaginary part (n i ). The origin of the band gaps is due to the interference of complex waves with propagating and evanescent fields in each layer. It is found that the band gaps are wider as the contrast n i /n r increases. We have found the ambient conditions to obtain an OM considering an auxiliary medium n ′ external to the Bragg Stack.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4864064