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Polarized optical scattering signatures from biological materials |
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| Authors: | W.E. Martin E. Hesse W.B. Sparks Z. Ulanowski P.H. Kaye |
| Affiliation: | a Centre for Astrophysics Research, University of Hertfordshire, UK b Science and Technology Research Institute, University of Hertfordshire, UK c Space Telescope Science Institute, Baltimore, USA d Geomicrobiology Research Group, Open University, UK e National Institute of Standards and Technology, USA |
| Abstract: | The polarization of laser light backscattered from biological samples has been measured over the wavelength range 350-850 nm. Incident circular, linearly polarized, and unpolarized light produces significant spectral features in the case of samples containing chlorophyll such as leaves and cyanobacteria. Polarization scattering signatures are observed around the chlorophyll ‘red edge’ that may have diagnostic value in the search for life signatures from extrasolar planets. |
| Keywords: | Circular polarization Chlorophyll red-edge Remote sensing Biomarkers Astrobiology |
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