Article (Scientific journals)
Digital holographic interferometry with CO2 lasers and diffuse illumination applied to large space reflectors metrology
Georges, Marc; Vandenrijt, Jean-François; Thizy, Cédric et al.
2013In Applied Optics, 52 (1), p. 102-A116
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Keywords :
Digital holography; Holography; Interferometry; infrared; thermal imager
Abstract :
[en] Digital holographic interferometry in the long wave infrared domain has been developed by combining a CO2 laser and a microbolometer array. The long wavelength allows large deformation measurements which are of interest in the case of large space reflectors undergoing thermal changes when in orbit. We review holography at such wavelengths and present some specific aspects related to this spectral range on our measurements. For the design of our digital holographic interferometer we studied the possibility of illuminating specular objects by a reflective diffuser. We discuss the development of the interferometer and the results obtained on a representative space reflector, first in the laboratory and then during vacuum cryogenic test.
Disciplines :
Physics
Author, co-author :
Georges, Marc ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Vandenrijt, Jean-François  ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Thizy, Cédric ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Stockman, Yvan ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Queeckers, Patrick;  Université Libre de Bruxelles - ULB > Microgravity Research Centre
Dubois, Frank;  Université Libre de Bruxelles - ULB > Microgravity Research Centre
Doyle, Dominic;  European Space Agency > ESTEC
Language :
English
Title :
Digital holographic interferometry with CO2 lasers and diffuse illumination applied to large space reflectors metrology
Publication date :
01 January 2013
Journal title :
Applied Optics
ISSN :
1559-128X
eISSN :
2155-3165
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Special issue title :
Digital Holography and 3D Imaging
Volume :
52
Issue :
1
Pages :
A102-A116
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ASE - Agence Spatiale Européenne [FR]
Commentary :
First author invited by Optical Society of America to propose a paper in special issue of Applied Optics on "Digital Holography and 3D Imaging"
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