Paper published in a journal (Scientific congresses and symposiums)
Investigation on the High Efficiency Volume Bragg gratings performances for spectrometry in space environment: Preliminary results
Loicq, Jerôme; Georges, Marc; Gaspar Venancio, Luis Miguel
2012In Telescope and systems
Peer reviewed
 

Files


Full Text
SPIE_Amsterdam_VBG_JLoicq_Final.pdf
Author postprint (589.69 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
VBG; Holography; Space enviroment
Abstract :
[en] The special properties of Volume Bragg Gratings (VBGs) make them good candidates for spectrometry applications where high spectral resolution, low level of straylight and low polarisation sensitivity are required. Therefore it is of interest to assess the maturity and suitability of VBGs as enabling technology for future ESA missions with demanding requirements for spectrometry. The VBGs suitability for space application is being investigated in the frame of a project led by CSL and funded by the European Space Agency. The goal of this work is twofold: first the theoretical advantages and drawbacks of VBGs with respect to other technologies with identical functionalities are assessed, and second the performances of VBG samples in a representative space environment are experimentally evaluated. The performances of samples of two VBGs technologies, the Photo-Thermo-Refractive (PTR) glass and the DiChromated Gelatine (DCG), are assessed and compared in the H, O2-B and NIR bands. The tests are performed under vacuum condition combined with temperature cycling in the range of 200 K to 300K. A dedicated test bench experiment is designed to evaluate the impact of temperature on the spectral efficiency and to determine the optical wavefront error of the diffracted beam. Furthermore the diffraction efficiency degradation under gamma irradiation is assessed. Finally the straylight, the diffraction efficiency under conical incidence and the polarisation sensitivity is evaluated.
Disciplines :
Physics
Author, co-author :
Loicq, Jerôme ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Georges, Marc ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Gaspar Venancio, Luis Miguel
Language :
English
Title :
Investigation on the High Efficiency Volume Bragg gratings performances for spectrometry in space environment: Preliminary results
Publication date :
July 2012
Event name :
Astronomical Telescopes and instrumentation 2012
Event organizer :
SPIE
Event date :
1-6 juillet 2012
Audience :
International
Journal title :
Telescope and systems
Special issue title :
Space Telescopes and Instrumentation 2012: Optical, Infrared and Millimeter wave
Peer reviewed :
Peer reviewed
Available on ORBi :
since 19 March 2013

Statistics


Number of views
47 (7 by ULiège)
Number of downloads
1 (1 by ULiège)

Bibliography


Similar publications



Contact ORBi