Open AccessReflectances from a supercontinuum laser-based instrument: hyperspectral, polarimetric and angular measurements
Author(s) -
Romain Ceolato,
Nicolas Rivière,
Laurent Hespel
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.029413
Subject(s) - supercontinuum , hyperspectral imaging , optics , polarimetry , remote sensing , calibration , spectral resolution , angular resolution (graph drawing) , polarization (electrochemistry) , lidar , laser , materials science , physics , spectral line , scattering , wavelength , geology , chemistry , mathematics , quantum mechanics , astronomy , combinatorics , photonic crystal fiber
Recent developments of active hyperspectral systems require optical characterization of man-made materials for instrument calibration. This work presents an original supercontinuum laser-based instrument designed by Onera, The French Aerospace Lab, for fast hyperspectral polarimetric and angular reflectances measurements. The spectral range is from 480 nm to 1000 nm with a 1 nm spectral resolution. Different polarization configurations are made possible in whole spectrum. This paper reviews the design and the calibration of the instrument. Hyper-spectral polarimetric and angular reflectances are measured for reference and man-made materials such as paint coatings. Physical properties of reflectances as positivity, energy conservation and Helmholtz reciprocity are retrieved from measurements.