AustralieFrV1, Main, Merge, bibRecord, 009752

Control of pattern formation in a single feedback system by photonic bandgap structures

Identifieur interne : 009752 ( Main/Merge ); précédent : 009751; suivant : 009753

Control of pattern formation in a single feedback system by photonic bandgap structures

Auteurs : N. Marsal [France] ; G. Montemezzani [France] ; M. Sciamanna [France] ; D. Wolfersberger [France] ; D. N. Neshev [Australie]

Source :

Proceedings of SPIE - The International Society for Optical Engineering [ 0277-786X ] ; 2008.

RBID : Pascal:08-0535361

Descripteurs français

Pascal (Inist)
- Instabilité modulation, Miroir, Boucle réaction, Bande interdite photonique, Structure périodique, Cristal photonique, Composé ternaire, Titanate de baryum, Système dissipatif, Cristal photoréfractif, BaTiO3, Ba O Ti, 0130C, 4270Q.

English descriptors

KwdEn :
- Barium titanates, Dissipative system, Feedback, Mirrors, Modulation instability, Periodic structures, Photonic band gap, Photonic crystals, Photorefractive crystal, Ternary compounds.

Abstract

We present the observation of the manipulation of modulational instability in a nonlinear dissipative system by a periodic photonic lattice. We use a setup based on a photorefractive BaTiO₃ crystal in a single feedback mirror configuration leading to the formation of hexagonal patterns. Additionally, we impose an optical lattice to induce one or two-dimensional photonic band-gap structures with variable parameters. We show that by varying the lattice periodicity, thus adjusting the transverse spatial frequencies associated to the bandgap, we can induce patterns of particular symmetry or suppress the modulational instability when the position of the lattice bandgap coincides with the instability gain.

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Le document en format XML

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<front><div type="abstract" xml:lang="en">We present the observation of the manipulation of modulational instability in a nonlinear dissipative system by a periodic photonic lattice. We use a setup based on a photorefractive BaTiO<sub>3</sub>
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Control of pattern formation in a single feedback system by photonic bandgap structures

Control of pattern formation in a single feedback system by photonic bandgap structures

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Descripteurs français

English descriptors

Abstract

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