Stray light correction in the optical spectroscopy of crystals.

Appl Spectrosc

National Institutes of Health, Laboratory of Cell Biology, National Heart, Lung, and Blood Institute, Bethesda, MD 20892 USA.

Published: September 2015

AI Article Synopsis

  • Stray light, which does not pass through a sample in spectroscopy, causes a phenomenon called absorption flattening that distorts the resulting spectrum.
  • Scientists must either account for stray light (leading to inaccurate spectra) or mask parts of the crystal to avoid this issue.
  • The paper introduces a new method that enables the use of the entire crystal while correcting for the distortion in the spectrum caused by stray light.

Article Abstract

It has long been known in spectroscopy that light not passing through a sample, but reaching the detector (i.e., stray light), results in a distortion of the spectrum known as absorption flattening. In spectroscopy with crystals, one must either include such stray light or take steps to exclude it. In the former case, the derived spectra are not accurate. In the latter case, a significant amount of the crystal must be masked off and excluded. In this paper, we describe a method that allows use of the entire crystal by correcting the distorted spectrum.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4688908PMC
http://dx.doi.org/10.1366/14-07716DOI Listing

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