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Fluorescence modeling for optimized-binary compressive detection Raman spectroscopy

delete2015-09-03
delete13
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OA
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O
Owen G. Rehrauer
B
Bharat R. Mankani
G
Gregery T. Buzzard
B
Bradley J. Lucier
D
Dor Ben‐Amotz *
DOI:10.1364/OE.23.023935delete
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Abstract

Abstract

En 中文
The recently-developed optimized binary compressive detection (OB-CD) strategy has been shown to be capable of using Raman spectral signatures to rapidly classify and quantify liquid samples and to image solid samples. Here we demonstrate that OB-CD can also be used to quantitatively separate Raman and fluorescence features, and thus facilitate Raman-based chemical analyses in the presence of fluorescence background. More specifically, we describe a general strategy for fitting and suppressing fluorescence background using OB-CD filters trained on third-degree Bernstein polynomials. We present results that demonstrate the utility of this strategy by comparing classification and quantitation results obtained from liquids and powdered mixtures, both with and without fluorescence. Our results demonstrate high-speed Raman-based quantitation in the presence of moderate fluorescence. Moreover, we show that this OB-CD based method is effective in suppressing fluorescence of variable shape, as well as fluorescence that changes during the measurement process, as a result of photobleaching. (C) 2015 Optical Society of America
Keywords:
MULTIVARIATE OPTICAL-ELEMENT
CHEMICAL CLASSIFICATION
SUBTRACTION
ALGORITHM
LASER
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Journal

Optics Express cover
Optics Express
IF:
3.3
Papers:
6.1W
Citations:
14.3W

Organization

Purdue University System cover
Purdue University System
Scholars:
3.9W
Papers: 3.6W
Citations: 66
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Purdue University
Scholars:
2.6W
Papers: 2.1W
Citations: 147