NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Polarized Optical Scattering Signatures from Biological Materials
Published
Author(s)
W. E. Martin, E. Hesse, J. H. Hough, William Sparks, C. S. Cockell, Z. Ulanowski, Thomas Germer, B. Kaye
Abstract
The polarization of laser light backscattered from biological samples has been measured over the wavelength range 350 to 850nm. Incident circular, linearly polarized, and unpolarized light produces significant spectrally prominent scattered polarizations 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.
Citation
Journal of Quantitative Spectroscopy and Radiative Transfer
Martin, W.
, Hesse, E.
, Hough, J.
, Sparks, W.
, Cockell, C.
, Ulanowski, Z.
, Germer, T.
and Kaye, B.
(2010),
Polarized Optical Scattering Signatures from Biological Materials, Journal of Quantitative Spectroscopy and Radiative Transfer, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906031
(Accessed October 11, 2025)