Acknowledgements

Acknowledgements I sincerely thank my project supervisor Professor S. Umapathy for introducing me to a promising field of Ultrafast Spectroscopy and for his inspiring guidance throughout my project work. It has been a wonderful experience working with him. I would like to thank the administrative and supporting staff of Indian Academy of Science for their kind co-operation during the course of my project. I gratefully acknowledge fruitful discussion and help from aditya and babita I would like to thank my parents for their constant encouragement and support which made it possible for me to pursue this project.