Journal of Spectral Imaging, Volume 9 Article ID a20 (2020)
Peer reviewed
Paper
It is highly demanding to identify healthy and non-healthy species in a heterogeneous environment such as human tissues. In such a case, one identifier, such as a spectral fingerprint, might be inadequate. Therefore, additional identification is required, for instance, a polarisation measurement. In view of that, the development of a spectropolarimeter that captures two cross-polarised arrays of spectral images is a key requirement. To meet this requirement, an imager optical setup has been designed to provide spatial, spectral and polarisation preference information for species that exist in a heterogeneous environment, such as in medical tissue samples. The spectral and polarisation information is obtained employing an acousto-optic tunable filter and a polarising beam splitter, respectively. The optical imager is designed to operate in the visible-near infrared range (450–850 nm) with a spectral resolution of 3 nm. The spectropolarimeter design along with optical characterisation results are reported.
Keywords: hyperspectral imaging, polarised imaging, spectral footprint, AOTF, optical design
Journal of Spectral Imaging
Volume 9 Article ID a20 (2020)
doi: 10.1255/jsi.2020.a20
Publication: 27 December 2020
© 2020 The Authors
This work is licensed under a Creative Commons BY-NC-ND Licence.
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