Tight control of light trapping in surface addressable photonic crystal membranes: application to spectrally and spatially selective optical devices
(Conference Presentation)

Xavier Letartre; Cédric Blanchard; Christian Grillet; Cécile Jamois; Jean-Louis Leclercq; Pierre Viktorovitch

doi:10.1117/12.2227526

26 July 2016 Tight control of light trapping in surface addressable photonic crystal membranes: application to spectrally and spatially selective optical devices (Conference Presentation)

Xavier Letartre, Cédric Blanchard, Christian Grillet, Cécile Jamois, Jean-Louis Leclercq, Pierre Viktorovitch

Author Affiliations +

Proceedings Volume 9885, Photonic Crystal Materials and Devices XII; 98850P (2016) https://doi.org/10.1117/12.2227526
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

Surface addressable Photonic Crystal Membranes (PCM) are 1D or 2D photonic crystals formed in a slab waveguides where Bloch modes located above the light line are exploited. These modes are responsible for resonances in the reflection spectrum whose bandwidth can be adjusted at will. These resonances result from the coupling between a guided mode of the membrane and a free-space mode through the pattern of the photonic crystal. If broadband, these structures represent an ideal mirror to form compact vertical microcavity with 3D confinement of photons and polarization selectivity. Among numerous devices, low threshold VCSELs with remarkable and tunable modal properties have been demonstrated. Narrow band PCMs (or high Q resonators) have also been extensively used for surface addressable optoelectronic devices where an active material is embedded into the membrane, leading to the demonstration of low threshold surface emitting lasers, nonlinear bistables, optical traps... In this presentation, we will describe the main physical rules which govern the lifetime of photons in these resonant modes. More specifically, it will be emphasized that the Q factor of the PCM is determined, to the first order, by the integral overlap between the electromagnetic field distributions of the guided and free space modes and of the dielectric periodic perturbation which is applied to the homogeneous membrane to get the photonic crystal. It turns out that the symmetries of these distributions are of prime importance for the strength of the resonance. It will be shown that, by molding in-plane or vertical symmetries of Bloch modes, spectrally and spatially selective light absorbers or emitters can be designed. First proof of concept devices will be also presented.

Conference Presentation

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Xavier Letartre, Cédric Blanchard, Christian Grillet, Cécile Jamois, Jean-Louis Leclercq, and Pierre Viktorovitch "Tight control of light trapping in surface addressable photonic crystal membranes: application to spectrally and spatially selective optical devices (Conference Presentation)", Proc. SPIE 9885, Photonic Crystal Materials and Devices XII, 98850P (26 July 2016); https://doi.org/10.1117/12.2227526

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KEYWORDS

Photonic crystals

Control systems

Optical components

Photons

Dielectric polarization

Mirrors

Optical microcavities

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