News : Leti

In the Optics and Photonics division of CEA-LETI, The Emissive Components Laboratory designs and fabricates micro-displays based on GaN micro-LEDs. One of the major issue of GaN µ-LEDs is the decrease of their efficiency with the size reduction. In literature, this degradation is attributed to SRH (Shockley-Read-Hall) non-radiative recombinations on pixel sidewalls, in defects induced […] >>

The development of silicon photonics technology has made it possible to integrate numerous photonic functions on the same chip, as close as possible to electronic functions, allowing the miniaturization of components in the fields of datacoms, telecoms and optical sensors. However, optical communication from chip to chip remains a key point to be developed (in […] >>

In order to reduce the manufacturing costs of integrated circuits and continue their miniaturization, disruptive approaches based on the use of selective deposition processes are now being considered in addition to photolithography. Recent developments are mostly linked to the use of atomic layer deposition (ALD) which is a very suitable technique for the development of […] >>

In recent years, the infrared imaging market has trended towards pixel size reduction. Interpixel crosstalk is a major limitation of small pitch devices, as it reduces the image resolution via the degradation of the modulation transfer function. The aim of this thesis is to study and fabricate pixel-level microoptics capable of reducing the crosstalk. The […] >>

CEA Leti has conceived a holographic printer as part of its development of optical components and systems for the field of Augmented Reality. This printer allows us to record micro-holograms that encode elementary angular functions. The current application of the printer concern the development of pixelated holograms recorded with phase and angular matching for the […] >>