Table Of Contents

TABLE OF CONTENTS

CHAPTER NO.

TITLE

PAGE NO.

ACKNOWLEDGEMENTS...................................................................I

1

INTRODUCTION 1.1 GENERAL................................................................................

2.

1

1.2 NORMAL RAMAN SCATTERING.....................................

1

1.3 RESONANCE RAMAN SCATTERING..............................

5

1.4 COHERENT ANTISTOKES RAMAN SCATTERING.....

6

STIMULATED RAMAN SPECTROSCOPY 2.1 INTRODUCTION...................................................................

10

2.2 THEORY 2.2.1 STIMULATED RAMAN GAIN

SPECTROSCOPY.......................................11 2.2.2 STIMULATED RAMAN LOSS

SPECTROSCOPY........................................12 2.3FEMTOSECOND STIMULATED RAMAN SPECTROSCOPY (FSRS)..........................................................................................13 3.

EXPERIMENTAL SETUP OF “FSRS” 3.1 EXPERIMENTAL DESIGN 3.1.1 LASER SYSTEM..........................................15 3.1.2 RAMAN PUMP PULSE................................16

3.1.3 RAMAN PROBE PULSE..............................17

4.

EXPERIMENTAL DETAILS 4.1 DATA COLLECTION...............................................................19

5.

RESULT AND DISCUSSION 5.1 COMPARISON BETWEEN SRS SPECTRUM AND SPONTENEOUS RAMAN SPECTRUM........................22 5.2 ‘SRS’ SPECTRA OF BENZENE...............................................22 5.3 ‘SRS’ SPECTRA OF CHLOROFORM....................................23 5.4 ‘SRS’ SPECTRA OF CARBON TETRA CHLORIDE..........24 5.6 ‘SRS’ SPECTRA OF ACETONITRILE..................................25 5.7 ‘SRS’ SPECTRA OF HEXANE.................................................26

6.

CONCLUSION.....................................................................................27 REFERENCES...................................................................................28