Fourier transform infrared spectroscopy Berezin Danila Moscow 2013.
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Transcript of Fourier transform infrared spectroscopy Berezin Danila Moscow 2013.
beam source sample detector
abso
rptio
n
beam number
A beam contains many frequencies of light atonce and absorption of that beam is measured
beam source sample detector
abso
rptio
n
beam number
Next, beam is modified to give a second data point
There are still undiscovered nuances
How to generate and modify that special beam?
What computer processing is required?
moving mirror
Wave interference is a key to generate that special beam
Michelson interferometer
light source
beam for theexperiment
FT spectroscopy has an advantage – Fellgett’s advantage
Scanningspectroscopy
Fourier transformspectroscopy