François Reynaud
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View article: Cryoless MIR spectroscopy via pump wavelength scanning using PPLN ridge waveguide upconversion
Cryoless MIR spectroscopy via pump wavelength scanning using PPLN ridge waveguide upconversion Open
This article presents what we believe to be a novel room-temperature mid-wave Infrared spectroscopy (MWIR) technique utilizing upconversion in a 2 cm-long PPLN ridge waveguide. Addressing limitations of costly, cryo-dependent FTIR, our "no…
View article: Cryoless MIR Spectroscopy via Pump Wavelength scanning using PPLN Ridge Waveguide Upconversion
Cryoless MIR Spectroscopy via Pump Wavelength scanning using PPLN Ridge Waveguide Upconversion Open
This article presents a novel room-temperature Mid-Wave Infrared spectroscopy (MWIR) technique utilizing upconversion in a 2cm-long PPLN ridge waveguide. Addressing limitations of costly, cryo-dependent FTIR, our "non-linear spectrometer" …
View article: Cryoless MIR Spectroscopy via Pump Wavelength scanning using PPLN Ridge Waveguide Upconversion
Cryoless MIR Spectroscopy via Pump Wavelength scanning using PPLN Ridge Waveguide Upconversion Open
This article presents a novel room-temperature Mid-Wave Infrared spectroscopy (MWIR) technique utilizing upconversion in a 2cm-long PPLN ridge waveguide. Addressing limitations of costly, cryo-dependent FTIR, our "non-linear spectrometer" …
View article: First on-sky interference fringes at 810 nm with the CHARA array using servo controlled hectometric outdoor fibre links
First on-sky interference fringes at 810 nm with the CHARA array using servo controlled hectometric outdoor fibre links Open
In the framework of the ALOHA (Astronomical Light Optical Hybrid Analysis) project, we have implemented a fibre-linked interferometer connecting two telescopes of the CHARA (Center for High Angular Resolution Astronomy) array to the recomb…
View article: 2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments Open
Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gat…
View article: Outdoor fibre link between two telescopes and the lab of the CHARA array at 810 nm. Demonstration of the optical path servo control.
Outdoor fibre link between two telescopes and the lab of the CHARA array at 810 nm. Demonstration of the optical path servo control. Open
In the framework of the ALOHA (Astronomical Light Optical Hybrid Analysis) project, dedicated to high resolution imaging in the L-band using optical fibre and nonlinear optics, we have implemented a servo controlled hectometric outdoor fib…
View article: Single photon MIR upconversion detector at room temperature with a PPLN ridge waveguide
Single photon MIR upconversion detector at room temperature with a PPLN ridge waveguide Open
In this paper we describe an upconversion detector in the mid infrared (around 3.5 μm). We take advantage of the PPLN ridge waveguide technology to achieve single photon detection at room temperature on a single spatial mode. With a pump p…
View article: First experimental demonstration of a temporal Hypertelescope operation
First experimental demonstration of a temporal Hypertelescope operation Open
High resolution Optical imaging instruments based on aperture synthesis have been developed over the last decades with the aim of reaching angular resolution in the nano radian range. These different instruments [1] take avantage of the pr…
View article: In-laboratory ALOHA mid-infrared up-conversion interferometer in the photon counting regime at λ = 3.39 μm
In-laboratory ALOHA mid-infrared up-conversion interferometer in the photon counting regime at λ = 3.39 μm Open
International audience
View article: AGILIS: Agile Guided Interferometer for Longbaseline Imaging Synthesis - Demonstration and concepts of reconfigurable optical imaging interferometers
AGILIS: Agile Guided Interferometer for Longbaseline Imaging Synthesis - Demonstration and concepts of reconfigurable optical imaging interferometers Open
In comparison to the radio and sub-millimetric domains, imaging with optical interferometry is still in its infancy. Due to the limited number of telescopes in existing arrays, image generation is a demanding process that relies on time-co…
View article: AGILIS: Agile Guided Interferometer for Longbaseline Imaging Synthesis
AGILIS: Agile Guided Interferometer for Longbaseline Imaging Synthesis Open
In comparison to the radio and sub-millimetric domains, imaging with optical\ninterferometry is still in its infancy. Due to the limited number of telescopes\nin existing arrays, image generation is a demanding process that relies on\ntime…
View article: Attacks against Network Functions Virtualization and Software-Defined Networking: State-of-the-art
Attacks against Network Functions Virtualization and Software-Defined Networking: State-of-the-art Open
International audience
View article: In-lab ALOHA mid-infrared up-conversion interferometer with high fringe contrast @λ = 3.39 μm
In-lab ALOHA mid-infrared up-conversion interferometer with high fringe contrast @λ = 3.39 μm Open
We report on the implementation of a mid-infrared (MIR) interferometer prototype for furthermore application in the framework of high-resolution imaging in astronomy. This paper demonstrates the possibility to extend to the L band our expe…