Tuning of an active photonic crystal cavity by an hybrid silica/silicon near-field probe

Gac, G; Rahmani, Adel; Seassal, Christian; Picard, E.; Hadji, E.; Callard, Ségolène

doi:10.1364/oe.17.021672

Cited by 10 publications

(2 citation statements)

References 26 publications

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“…The basic building blocks of the hybrid cavity structure are sketched in figure 1. The structure consists of two elements: a high-Q PC microcavity that has been described and studied in former works [26] and a bowtie nano-antenna. The PC microcavity is designed to present a high-Q mode (5800) at telecom wavelength (figure 1(c)).…”

Section: Structure Designmentioning

confidence: 99%

Plasmonic-photonic crystal coupled nanolaser

Zhang¹,

Callard²,

Jamois³

et al. 2014

Nanotechnology

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We propose and demonstrate a hybrid photonic-plasmonic nanolaser that combines the light harvesting features of a dielectric photonic crystal cavity with the extraordinary confining properties of an optical nano-antenna. For this purpose, we developed a novel fabrication method based on multi-step electron-beam lithography. We show that it enables the robust and reproducible production of hybrid structures, using a fully top-down approach to accurately position the antenna. Coherent coupling of the photonic and plasmonic modes is highlighted and opens up a broad range of new hybrid nanophotonic devices.

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Section: Structure Designmentioning

confidence: 99%

Plasmonic-photonic crystal coupled nanolaser

Zhang¹,

Callard²,

Jamois³

et al. 2014

Nanotechnology

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“…In all cases, the perturbation must be small enough not to cancel the cavity resonance. Basically, the cavity mode volume can be modified by immersing a small dielectric element within the evanescent field of the cavity 10 11 12 13 14 . Thereby, the effective volume of the latter is increased (light penetrates inside the dielectric) leading to a redshift of its RW.…”

mentioning

confidence: 99%

Double-way spectral tunability for the control of optical nanocavity resonance

Baida

Grosjean

2015

Sci Rep

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Scanning Near-field Optical Microscopy (SNOM) has been successful in finely tuning the optical properties of photonic crystal (PC) nanocavities. The SNOM nanoprobes proposed so far allowed for either redshifting or blueshifting the resonance peak of the PC structures. In this paper, we theoretically demonstrate the possibility of a redshifting (up to +0.65 nm) and a blueshifting (up to −5 nm) the PC cavity resonance wavelength with a single perturbation element. As an example, a fiber bowtie-aperture nano-antenna (BNA) engraved at the apex of a SNOM tip is proposed to play this role. The double-way tunability is the result of a competition between an induced electric dipole (BNA at resonance) leading to a redshift and an induced magnetic dipole (the tip metalcoating) giving rise to a blueshift of the resonance wavelength. We demonstrate that the sign of the spectral shift can be simply controlled through the tip-to-cavity distance. This study opens the way to the full postproduction control of the resonance wavelength of high quality-factor optical cavities.

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