Testing of a possible RF-generator for a Space Based AOTF application in the Frame of an ESA Space Mission
| dc.contributor.author | Vanhamel, J. | |
| dc.contributor.author | Berkenbosch, S. | |
| dc.contributor.author | Dekemper, E. | |
| dc.contributor.author | Leroux, P. | |
| dc.contributor.author | Neefs, E. | |
| dc.contributor.author | Van Lil, E. | |
| dc.date | 2017 | |
| dc.date.accessioned | 2017-11-28T12:48:17Z | |
| dc.date.available | 2017-11-28T12:48:17Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/6336 | |
| dc.description | Several architectures have been developed to produce a high quality RF-signal largely depending on the application. The use of commercial off-the-shelf electronic components is not allowed for space applications. Therefore space-qualified components have to be used. Several possible solutions were investigated in the framework of the ALTIUS mission (Atmospheric Limb Tracker for the Investigation of the Upcoming Stratosphere) [1], [2]. The goal of this mission is to measure atmospheric trace species concentration profiles with a high spatial resolution [3]. The concept relies on the acquisition of spectral images of the bright atmospheric limb at specific wavelengths. Three independent channels will be implemented inside the instrument, each working in a different spectral range, namely ultraviolet (UV): 250 to 400 nm, visible (VIS): 440 to 800 nm and near-infrared (NIR): 900 to 1800 nm. In two of the three channels, a wide aperture TeO2 AOTF will be used for the selection of different spectral wavelengths. The working principle of an AOTF is based on the interaction of sound and light inside a birefringent crystal [4], [5]. The RF-power is converted into acoustic power by means of a piezoelectric transducer. For every specific RF-frequency and RF-power, only photons of particular energy will interact with the sound wave inside the crystal. The diffracted beam exits under a different angle than the rest of the light. The beam of interest is focused onto a detector which performs the spectral imaging. | |
| dc.language | eng | |
| dc.title | Testing of a possible RF-generator for a Space Based AOTF application in the Frame of an ESA Space Mission | |
| dc.type | Conference | |
| dc.subject.frascati | Physical sciences | |
| dc.audience | Scientific | |
| dc.source.title | 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 19-26 August 2017, Montreal, Canada | |
| Orfeo.peerreviewed | No | |
| dc.identifier.doi | 10.23919/URSIGASS.2017.8105079 |
