Agnès Maître

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We consider the problem of the measurement of very small displacements in the transverse plane of an optical image with a split photodetector. We show that the standard quantum limit for such a measurement, which is equal to the diffraction limit divided by the square root of the number of photons used in the measurement, cannot be overcome by use of(More)
Rodents are exquisitely sensitive to light and optogenetic behavioral experiments routinely introduce light-delivery materials into experimental situations, which raises the possibility that light could leak and influence behavioral performance. We examined whether rats respond to a faint diffusion of light, termed caplight, which emanated through the(More)
Molecularly imprinted polymers are efficient materials to detect selectively target molecules with a very high sensitivity. In this study, we associate them to 3D self-assembled photonic crystals and extend their use to the detection of nanoparticles. We focus on the realization of the imprint of nanoparticles, in our case fluorescent nanocrystals, and(More)
Optical Tamm plasmon states are electromagnetic modes confined at the interface between a Bragg mirror and a metallic film. These states offer coupling to photonic states in a relatively narrow solid angle in both TM and TE polarizations, and quality factors of a few hundreds to thousands in the visible and near infrared domain with limited fabrication(More)
We present a versatile and efficient way to engineer a planar defect layer between two opal-based photonic crystals, leading to the appearance of a passband within the photonic stopband. The optimization of the planar defect parameters, necessary to preserve the high crystallographic order of the hetero-structures, is deduced from 1D-simulations of(More)
In this paper, we describe the plasmonic and plasmon-photon coupling properties of nanostructured metallic films obtained by a self-assembly protocol. A gold layer is deposited on top of a self-assembled deposition of silica beads (artificial opal), which thus acts as a template. Atomic-force and scanning-electron microscopies demonstrates a periodic(More)
We investigated different methods to engineer efficiently a planar defect between two artificial opals. The samples were characterized by atomic force microscopy, scanning electron microscopy and specular reflection spectroscopy. They presented pronounced defect modes within the photonic stopband. These architectured structures were applied to the(More)
Single colloidal CdSe/ZnS nanocrystals are deposited at various distances from a gold film in order to improve their performance as single photon sources. Photon antibunching is demonstrated and the experimental curves are accurately fitted by theoretical equations. Emission lifetime and intensity are measured and found in excellent agreement with(More)
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