Könyv Coded Spectroscopy for Ethanol Detection in Diffuse Media Scott McCain

Coded Spectroscopy for Ethanol Detection in Diffuse Media

New Methods in Raman Scattering Based Optical Diagnostics

Szerző: Scott McCain
Nyelv: Angol
Kötés: Puha kötésű
Elérhetőség: Beszállítói készleten
Küldés 9-15 napon belül
19 050 Ft
Optical sensing in the visible and near-infrared regions of the electromagnetic spectrum allows for...

Információk a könyvről

Szerző
Nyelv
Angol
Kötés
Könyv - Puha kötésű
Kiadva
2008
oldal
88
EAN
9783639052657
ISBN
363905265X
Enbook ID
06814747
Súly
127
Méretek
152 x 229 x 5

Teljes leírás

Optical sensing in the visible and near-infrared regions of the electromagnetic spectrum allows for non-invasive analysis oftissue. With the use of Raman spectroscopy, a high degree of chemical specificity is available with laser powers that are harmless to living tissue. Such systems, however, are plagued by the low efficiency of the Raman scattering process by molecules and the intense background fluorescence from some biological materials. To address these drawbacks, we have investigated the use of coded spectroscopy to make Raman spectroscopy more feasible in routine use. By coding the input aperture of a dispersive spectrometer, through put gains of 10-100 are possible over a slit spectrometer. The theory, design, and performance characteristics of this staticaperture coding will be discussed in this work. In addition, by coding the excitation light sources one can filter out the shifting Raman signals from the stationary fluorescent background. The theory and implementation of an expectation maximization algorithm for Raman signal reconstruction will be analyzed. The design of a multi-excitation, coded-aperture Raman spectrometer will be described.

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