Le NiP black est un alliage de Nickel-Phosphore poreux présentant un coefficient d'absorption exceptionnel de 0.998, permettant un gain en diffusion d'un facteur 10 à 20 par rapport à la meilleure des peintures noires utilisée sur les baffles et montures des instruments d'optique.
L'industrialisation de ce procédé fait l'objet d'une collaboration entre le CNES, SODERN et MMS afin de répondre au mieux aux exigences des différents instruments spatiaux.
Le faible niveau de diffusion des baffles et des montures des instruments optiques est un élément clé d'un faible niveau de lumière parasite et par voie de conséquence, des performances en détection, imagerie et d'analyse. Les essais réalisés en 98 et 99 sur des visières de senseurs solaires haute précision implantés sur les plate-formes telecom MMS ont confirmé les excellentes performances du senseur obtenues grâce à ce traitement. NiP Black s'incrit dans une démarche générale MMS d'amélioration des performances en lumière parasite des instruments optiques.
Il est proposé de présenter le NiP Black et les performances réalisées sur des visières de senseurs implantés sur les plate-formes MMS, ainsi que son potentiel à venir.
Selected technologies for the integration of the TRANSMIT/RECEIVE OPTICS (TRO) are presented. One of the challenging characteristics of the TRO is its stringent requirement on opto-mechanical stability. The stability performance of the TRO must be ensured for the relevant interface environments (thermal, structural) over the 3 years mission lifetime. Comprehensive analyses have been conducted, which have confirmed the need for the development of special integration technologies. Also, dedicated test equipment has been developed to precisely verify the TRO´s optomechanical stability. Another important feature of the TRO is its exposure to the high power laser beam of the ADALIN instrument. The corresponding optical elements and their mounts must survive exposure to light intensities up to the required laser-induced damage thresholds (LIDT). Two types of adhesives for gluing of the TRO optics have been selected. Their qualification w.r.t. outgassing was necessary since LIDT´s of optical surfaces are significantly reduced when organic outgassing products are deposited there.
The Atmospheric LAser Doppler INstrument (ALADIN) is the payload of the ADM-AEOLUS mission, which aims at measuring wind profiles as required by climatology and meteorology users. ALADIN belongs to a new class of Earth Observation payloads and will be the first Wind Lidar in space. The instrument comprises a high energy laser and a direct detection receiver operating on aerosol and molecular backscatter signals in parallel.
ALADIN is now in its final construction stage: the Opto-Structural-Thermal-Model (OSTM) has been completed and successfully tested, mo st of the flight equipments have been delivered and the integration of Flight Model (FM) has started. The Aeolus satellite is developed for the European Space Agency with EADS Astrium as prime contractor for the satellite and the instrument.
An acousto-optical spectrometer (AOS) is employed in order to meet scientific mission objectives of submillimeter-wave limb-emission sounder (SMILES) to be aboard the Japanese Experiment Module (JEM) of International space station (ISS). AOS is developed by ASTRIUM for the Japanese space agency (NASDA). The capability of multi channel detection with AOS is suitable for observing multi-chemical species in a wide frequency region. Low noise of the AOS enables us to obtain the spectra with a very high sensitivity. Several technical concerns relating to important instrumental characteristics of AOS are discussed and expected performance of the design are overviewed.
Photonics is present into several industries. Further development implies efficient link from innovation to application. For that purpose, optics education at universities is key, not only to teach the fundamental physics, but for students to develop their know-how, entrepreneurship and behavior, because: Photonics is often part of systems, requesting the mastering of development tools and processes used by industries, Innovations require an entrepreneur spirit, Industries are organized per projects for optical developments in which optical specialists have to interact with other fields and people in a plateau. This is why universities shall develop ecosystems where students, researchers, teachers and industries meet and foster the acquisition of these above three skills by the students. ASERFO, French association of optics industries (Thales, Airbus, CEA, Essilor…), worked at promoting this ecosystem by funding, advising and supporting the training at the Institut d’Optique Graduate School (IOGS) as an industrial advisory committee. It is proposed to present this approach and talk on concrete initiatives implemented by Institut d’Optique Graduate School with regard to these industrial skills.
An Acousto-Optical Spectrometer (AOS) features the submillimeter-wave limb-emission sounder (SMILES) to be aboard the Japanese Experiment Module (JEM) of International space station (ISS). The Japanese space agency (NASDA) has contracted ASTRIUM for the development of the AOS. Acousto- Optical Spectrometers are well adapted for analyzing in real time with high resolution a wide band and faint signal embedded in radiometric noise. Their usefulness for instantaneous detection and mapping of multi-species emission was first demonstrated in the field of radio astronomy in 1970s and thanks to their compactness and low power consumption, they are highly well adapted to space application. Several technical concerns related to important instrumental characteristics of AOS are discussed and performances are overviewed.
An acousto-optical spectrometer (AOS) is employed in order to meet scientific mission objectives of submillimeter-wave limb-emission sounder (SMILES) to be aboard the Japanese Experiment Module (JEM) of the International space station (ISS). The capability of multi channel detection with AOS is suitable for observing multi chemical species in a wide frequency region. Wide noise dynamic range enables us to obtain the spectra without unnecessary increase of system noise, suggesting a good combination of AOS with low noise front end system of SMILES> Several technical concerns relating to important instrumental characteristics of AOS are discussed and expected performance of the spectrometers to be used in the JEM/SMILES mission are over viewed.