Room temperature spontaneous emission enhancement from quantum dots in photonic crystal slab cavities in the telecommunications C-band

We report on the control of the spontaneous emission dynamics from InAsP self-assembled quantum dots emitting in the telecommunications C-band and weakly coupled to the mode of a double heterostructure cavity etched on a suspended InP membrane at room temperature. The quality factor of the cavity mode is 44x10^3 with an ultra-low modal volume of the order of 1.2 lambda/n)^3, inducing an enhancement of the spontaneous emission rate of up a factor of 2.8 at 300 K

Nondestructive three-dimensional imaging of crystal strain and rotations in an extended bonded semiconductor heterostructure

International audienceWe report the 3D mapping of strain and tilts of crystal planes in an extended InP nanostructured layer bonded onto silicon, measured without sample preparation. Our approach takes advantages of 3D x-ray Bragg ptychography combined to an optimized inversion process. The excellent agreement with the sample nominal structure validates the reconstruction while the evidence of spatial fluctuations hardly observable by other means, underlines the specificities of Bragg ptychography

Modelisation de diodes laser a retro-action repartie. Realisation de reseaux de diffraction par voie holographique

SIGLEINIST T 77223 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

High Q polarization independent Guided Mode Resonant Filter with "doubly periodic" etched Ta2O5 bi-dimensional grating

International audienc

Wavelength-selective nanopatterned III-V on Si hybrid photonic waveguide (Orale)

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