National audience
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July 6, 2015 (v1)PublicationUploaded on: February 28, 2023
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May 2, 2016 (v1)Journal article
We have developed a nanophotonic platform with microdisks using epitaxial III-nitride materials on silicon. The two-dimensional platform consists of suspended waveguides and mushroom-type microdisks as resonators side-coupled with a bus waveguide. Loaded quality factors up to 80000 have been obtained in the near-infrared spectral range for...
Uploaded on: February 28, 2023 -
February 11, 2015 (v1)Conference paper
Deep ultra-violet semiconductor lasers have numerous applications for optical storage, biochemistry or optical interconnects. UV-emitting ridge lasers usually embed nitride heterostructures grown on complex buffer layers or expensive substrates – an approach that cannot be extended to nano-photonics and microlasers. We demonstrate here the...
Uploaded on: March 25, 2023 -
June 24, 2015 (v1)Conference paper
The development of semiconductor lasers in the deep ultra-violet (UV) spectral range is attracting a strong interest, related to their multiple applications for optical storage, biochemistry or optical interconnects. UV-emitting ridge lasers usually embed nitride heterostructures grown on complex buffer layers or expensive substrates – an...
Uploaded on: February 28, 2023 -
February 18, 2016 (v1)Journal article
Deep ultra-violet semiconductor lasers have numerous applications for optical storage and biochemistry. Many strategies based on nitride heterostructures and adapted substrates have been investigated to develop efficient active layers in this spectral range, starting with AlGaN quantum wells on AlN substrates and more recently sapphire and SiC...
Uploaded on: December 4, 2022 -
February 24, 2015 (v1)Journal articleResonant second harmonic generation in a gallium nitride two-dimensional photonic crystal on silicon
We demonstrate second harmonic generation in a gallium nitride photonic crystal cavity embedded in a two-dimensional free-standing photonic crystal platform on silicon. The photonic crystal nanocavity is optically pumped with a continuous-wave laser at telecom wavelengths in the transparency window of the nitride material. The harmonic...
Uploaded on: December 4, 2022 -
July 7, 2014 (v1)Journal article
We demonstrate a two-dimensional free-standing gallium nitride photonic crystal platform operating around 1550 nm and fabricated on a silicon substrate. Width-modulated waveguide cavities are integrated and exhibit loaded quality factors up to 34 000 at 1575 nm. We show the resonance tunability by varying the ratio of air hole radius to...
Uploaded on: December 4, 2022 -
August 25, 2015 (v1)Conference paper
Dans le domaine de la nano-photonique, les matériaux semiconducteurs nitrures (GaN, AlN) présentent un intérêt grandissant en raison de leurs spécificités, et de leur complémentarité avec les filières déjà établies. Ces matériaux présentent en effet une plage de transparence large, du moyen infra-rouge à l'ultra-violet ; ils présentent aussi...
Uploaded on: February 28, 2023 -
September 30, 2016 (v1)Journal article
We demonstrate phase-matched second harmonic generation in gallium nitride on silicon microdisks. The microdisks are integrated with side-coupling bus waveguides in a two-dimensional photonic circuit. The second harmonic generation is excited with a continuous wave laser in the telecom band. By fabricating a series of microdisks with diameters...
Uploaded on: February 28, 2023