Raman Scattering Spectrometer ::

RamanRamanRamanRaman

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RamanRamanRamanRaman

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Raman1928X

1930(Sir Chandrasekhara Venkata Raman 18881970)

1968Tobin(laser)Raman scattering

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RamanRamanRamanRaman

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Raman*AbsorbedTransmittedReflectedScatteredIncident light l0l0l0l0l l0l l0ElasticInelastic

Raman*Rayleigh: Elastic scatteringRaman: Inelastic scattering

Raman*1. Raman effectRaman E=h(0 - ) E=h(0 + )2. Raman shiftRaman

Raman*

Raman* P = E

P E

r0Induced polarizationP = E (: polarizability)

- +-+rDipole re-radiates at same frequency wiE=E0cos(wit)

Raman*CO2 symmetric mode1338cm-1

RamanRamanRamanRaman

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Raman* PMTPCL1L2M2M1()()()()

Raman*

Raman*

Raman*

RamanRamanRamanRaman

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Raman*

(CCl4)Raman

Raman*IRRaman

Raman*

SiGeRaman

RamanRamanRamanRaman

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40-4000Cm-1

400-4000Cm-1

KBr

RamanRamanRamanRaman

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[1] http://newton.ex.ac.uk/research/biomedical/optics/sers.htmlExeter[2] http://www.andor.com/learn/applications/?docID=64Andor Technology [3] http://news.bbc.co.uk/2/low/uk_news/scotland/edinburgh_and_east/7837517.stm[3] http://deltanu.com/tutorials/Intevac [4] http://www.riken.go.jp/lab-www/spectroscopy/en/interface.html[5] http://groups.mrl.uiuc.edu/granick/People/Research/Research_Malgorzata.html[6]http://www.laserfocusworld.com/display_article/113739/12/none/none/OptWr/Modular-designs-advance-Raman-spectrometersLaserFocusWorld[7] http://www.maryspectra.org/raman/raman.htmMaryspectra[8] http://carbon.cudenver.edu/public/chemistry/classes/chem4538/raman.htmRaman Spectroscopy [9] http://phy.ntnu.edu.tw/~chiact/index.htm[10] http://www.renishaw.com.tw/tw/6259.aspxRenishaw *

[11] http://www.princetoninstruments.com/spectroscopy/raman.aspxprincetoninstruments[12]http://www.wasatchphotonics.com/applications/raman_spectroscopy.htmWasatchphotonics[13] http://www.ch.ntu.edu.tw/faculty/Instrument/raman.htm [14] , ,,96 [15] , ,, 88 [16] , , , 87 *

Thanks for your attention*

(1)anti-stokesstokes?ans

(2)He-Ne(632.8nm)Ar(488nm)??ans

(3)?ansH2O*

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