1. Rahul Joseph Lee Laim

2.  The incoming light is in-elastically scattered by the vibration of the molecules.  This change in frequency of the light due to vibrational scattering is the Raman effect.

3.  Transitions occur in 10 -14 seconds  Raman Shift (cm -1 )  Excess energy released as heat

4.  Sample volume can be as small as 1µm diameter  Imaging modes Direct Imaging – Imaging over small range of wavenumbers Hyperspectral Imaging –Location profile of various components

6.  Detect counterfeit drugs  Non-destructive detection of biological components  Monitors gas mixtures in medical applications  Characterization of materials and orientation  Monitors activity in catalytic reactions

7. 6W Argon Ion Laser  457.9 nm, 465.8 nm,, 488.0 nm, 496.5 nm, 514.5 nm, 528.7 nm.

8. Laser Light Path

9. Photomultiplier Tube

10. Spectrometer (monochrometer) nλ=2dsinΘ

11. Dye Laser