raman scattering spectrometer 拉曼散射光譜儀
DESCRIPTION
Raman Scattering Spectrometer 拉曼散射光譜儀. 光電材料特性量測 指導老師 : 李明倫 學生 : 陳文郎 李宗育. 大綱. Raman 簡介 Raman 原理 Raman 光譜儀結構 Raman 散射光譜分析 結論 引用資料. 大綱. Raman 簡介 Raman 原理 Raman 光譜儀結構 Raman 散射光譜分析 結論 引用資料. Raman 簡介. 拉曼在研究光的散射過程中於 1928 年發現的散射現象中有一特殊效應,和 X 射線散射的康普頓效應類似,光的頻率在散射後會發生變化。頻率的變化決定於散射物質的特性。 - PowerPoint PPT PresentationTRANSCRIPT
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Raman Scattering Spectrometer ::
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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
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Raman*Rayleigh: Elastic scatteringRaman: Inelastic scattering
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Raman*1. Raman effectRaman E=h(0 - ) E=h(0 + )2. Raman shiftRaman
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Raman*
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Raman* P = E
P E
r0Induced polarizationP = E (: polarizability)
- +-+rDipole re-radiates at same frequency wiE=E0cos(wit)
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Raman*CO2 symmetric mode1338cm-1
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RamanRamanRamanRaman
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Raman* PMTPCL1L2M2M1()()()()
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Raman*
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Raman*
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Raman*
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RamanRamanRamanRaman
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Raman*
(CCl4)Raman
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Raman*IRRaman
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Raman*
SiGeRaman
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RamanRamanRamanRaman
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40-4000Cm-1
400-4000Cm-1
KBr
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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 *
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[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 *
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Thanks for your attention*
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(1)anti-stokesstokes?ans
(2)He-Ne(632.8nm)Ar(488nm)??ans
(3)?ansH2O*
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